If you are looking for the answer of how calculators calculate sine, you’ve got the right page. We have approximately 5 FAQ regarding how calculators calculate sine. Read it below.

## 1. What is the angle formed by an upward line

**Ask: **

1. What is the angle formed by an upward line of sight and the horizontal line? A. Angle of Depression B. Angle of Elevation C. Horizontal Line D. Line of Sight 2. Which of the following is the angle formed by the downward line of sight and a horizontal line? A. Angle of Depression B. Angle of Elevation C. Horizontal Line D. Line of Sight 3. What do you call to the line joining the observer’s eye and the object observed? A. Angle of Depression B. Angle of Elevation C. Horizontal Line D. Line of Sight 4. Which of the following is the device used to measure angles of elevation or depression? A. calculator B. clinometer C. protractor D. ruler 5. The angle of depression from the top of a satellite tower to a jeep is 45°. If the satellite tower is 18 m high, then how far is the jeep from the satellite tower? A. 8 m B. 18 m C. 28 m D. 38 m 6. A giant bamboo tree casts a shadow 532 ft long. Find the height of the tree if the angle of elevation of the sun is 25.7°. A. 156 ft B. 200 ft C. 256 ft D. 356 ft 7. Maria is at the top of a cliff and sees a seal in the water. If the cliff is 40 feet above the water and the angle of depression is 52′, what is the horizontal distance from the seal to the cliff, to the nearest foot? A. 30 ft B. 31.3 ft C. 35.6 ft D.. 156 ft 8. When the angle of elevation of the sun is 40°, a coconut tree casts a shadow seven meters long. How tall is the coconut tree? A. 0.587m B. 5.87 m C. 58.7 m D. 587 m 9. It is the reciprocal ratio of cosine. D. cosecant B. cotangent C. sine D. secant 10. Which of the following statements is false about triangle ADEW? A. Angle D is adjacent to side d. C. Side e is opposite angle E. B. Angle W is opposite side W. D. Side d is adjacent to angle E.

**Answer:**

1. B. Angle of Elevation

2. A. Angle of Depression

3. D. Line of Sight

4. B. Inclinometer

5. B. 18m

6. C. 256 ft

7. B. 31.3 ft

8. B. 5.87

9. D. secant

10. A. Angle D is adjacent to side D.

**Step-by-step explanation:**

@semus

## Let us find out how much you already know about

**Ask: **Let us find out how much you already know about right triangle. Take note of the items that you will not be able to answer correctly. Try to find the correct answer as you go through this module. Use Calculator if needed. Write your answer

in a separate sheet of paper

Consider ARCA at the right for items 1-5

1) Which side of the triangle in the hypotenuse?

a C

b. All

25 cm

2) Which side is opposite of

b. AB

3) What is the length 25 cm hbar supsetdcm

<14cm

d. BA

C

7m

A

4) What is the value of sine A?

7/45

28/15

c, pi/24

24/7

5) What is the value of * tan B * 7 7/45 28/15

c. AC

E. AC

r -pi/26

28/7

6) Which of the following is the value of sin 10? a 0.1736 b. 0.1763

0,1896

d. 0.2020

7) In the right APQR at the right, |PQ|=12| cm and |QR| = 5cm What is the value of cos R?

b.

Q

12

P

R

12/13 5/13

d. 1/11 33/1

5

8) Given at the right in right MCB: Find AC. a 15 cm

e, 13cm

d. |2cm|

A

26 cm

[tex]hugebold{➤Answer:}[/tex]

1.**B**

2.**C**

3.**B**

4.**B**

5.**C**

6.**A**

7.**B**

8.**A**

**Step-by-step explanation:**

**SOLUTION**** ****ON**** ****THE**** ****PICTURE**** ****PROVIDED**

**Note****:**** ****too**** ****lazy**** ****to**** ****write**** ****the**** ****solution****.****_****.**

**Answer:**

PL \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ [/tex]

tex] \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ [/tex]

## How do you find the inverse of sine in your

**Ask: **How do you find the inverse of sine in your calculator?

A. alpha, sin-I

B. 2nd key, sinl

C. sin-1

D. 2nd key, sin-l

**Answer:**

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Trigonometry Articles

Use the Inverse Trigonometry Function or Inverse of a Reciprocal Function on Your Calculator

By: Mary Jane Sterling

Updated: 03-27-2016

In This Article

On scientific calculators, the –1 or x–1 button means to find the reciprocal of a number. This reciprocal button allows you to find the value of a reciprocal function when you’re working with a number. But look under the 2nd functions, which are different functions or operations written above the buttons, for the inverse trig functions.

Access to these functions is usually above the original sine, cosine, and tangent buttons. Some calculators have a button labeled “2nd.” Others use alternate colors — usually yellow or green — to denote the second use of the button. And even when you find the inverse functions, you’ll notice that they’re only for the three primary trig functions.

The calculator doesn’t show any way to access cosecant, secant, or cotangent. So where are they? The following information shows how to use the three available buttons and then how to calculate the other inverses.

Using the inverse function button on your scientific calculator

To understand this button, look at the following example: find

image0.png

in degrees by using a scientific calculator.

Decide whether you want your answer in radians or degrees.

For this example, use the mode menu or whatever method your calculator uses to change the mode to degrees.

Enter the problem as given.

The following are the typical keystrokes:

image1.png

The result is 30, meaning 30 degrees.

Calculating the inverse of a reciprocal function on your scientific calculator

To determine the inverse of a reciprocal function, such as Cot–1(2) or Sec–1(–1), you have to change the problem back to the function’s reciprocal — one of the three basic functions — and then use the appropriate inverse button.

When changing to the function’s reciprocal, you flip the number with that function, too. For example, Cot–1(2) becomes

Working around the inverse cotangent

The other big pitfall you encounter when using a scientific calculator involves the inverse cotangent. The inverse tangent, Tan–1x, has its range in QI and QIV, but Cot–1x has its range in QI and QII. If you want

image2.png

and your calculator, you get an answer in the fourth quadrant. You have to be aware that this quadrant isn’t correct; you got it because you changed functions so you could use the calculator. Just use the answer from the calculator and determine the corresponding angle in QII. Here’s an example.

image3.png

Set the mode to degrees.

Change the function and value to their reciprocals.

image4.png

Find the value of the inverse function by using a calculator.

image5.png

On some calculators, parentheses will automatically pop up for you to enter the tangent value inside them. If they don’t, then you should insert parentheses around the fraction manually. The result is –30 degrees.

Find the angle in QII that has the same reference angle.

The angle in QII with a 30-degree reference angle is an angle of 150 degrees.

About This Article

This article can be found in the category:

Trigonometry

Trigonometry For Dummies Cheat Sheet

How to Recognize Basic Trig Graphs

How to Create a Table of Trigonometry Functions

Defining the Radian in Trigonometry

How to Use the Double-Angle Identity for Sine

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## how to calculate sine of a number like his the

**Ask: **how to calculate sine of a number

like his the sine of 45 equal to 0.7071067812

ha d ko pops naiintindihan

## Directions. Let us find out how much you already know

**Ask: **Directions. Let us find out how much you already know about this module.

Answer the following questions as much as you can. Take note of the items that

you were not able to answer correctly and then let us find out the correct answer

as we go through this module. Write your answers on your answer sheets.

1. With respect to the given angle, what is the ratio of the opposite side to the

hypotenuse?

B. cosine

C. tangent

D. cosecant

A. sine

2. With respect to the given angle, what is the ratio of the adjacent side to the

hypotenuse?

C. tangent

A. sine

B. cosine

D. cosecant

3. Refer to the figure at the right.

Which of the following statement is correct?

A. x= 8

C. sin 60° =

4

600

B. sin 30º = =

4

D. cos 60º =

у

2

4. The expression 2 (sin 30°) – tan 45º is equal to

A. -1

B. O

C. 1

D. 2

5. AXYZ is an oblique triangle. If XY measures 20 cm, XZ measures 15 cm and ZZ

measures 35° then what is the measure of ZY?

A. 25.84°

B. 24.85°

C. 25.48

D. 24.58°

Use calculator to find the value of the following:

6. sine 100º =

cosine 100º =

7 sine 70°=

cosine 700 =

**Answer:**

1.A

2. C

3.A

4. D

5. A

6. 60 cos C, so cos C = 12 /60 = 0.2, and, with the use of a calculator, C = 1.3734

Not only you can get the answer of **how calculators calculate sine**, you could also find the answers of Let us find, 1. What is, How do you, Directions. Let us, and how to calculate.