Trigonometric Functions

Precalculus Enhanced with Graphing Utilities ยท 702 exercises

Q. 49

Find the length of the arc subtended by a central angle of 30° on a circle of radius 2 feet. What is the area of the sector?

3 step solution

Q.100

For what numbers θ,f(θ)=cosec(θ) does not exist

2 step solution

Q. 1

What is the formula for the circumference C of a circle of radius r ? What is the formula for the area A of a circle of radius r ?

2 step solution

Q2.

If a particle has a speed of r feet per second and travels a distance d (in feet) in time t (in seconds), then d=____.

2 step solution

Q. 2

If a particle has a speed of r feet per second and travels a distance d (in feet) in time t (in seconds), then d=_______ .

2 step solution

Q. 3

An angle θ is in ________  _________ if its vertex is at the origin of a rectangular coordinate system and its initial side coincides with the positive x-axis.

2 step solution

Q. 4

A __________ __________ is a positive angle whose vertex is at the center of  a circle.

2 step solution

Q. 5

If the radius of a circle is r and the length of the arc subtended by a central angle is also r, then the measure of the angle is 1_______.

2 step solution

Q. 6

On a circle of a radius r,a central angle of θ radians subtends an arc of length s=________ ; the area of the sector formed by this angle θ is A=________.

2 step solution

Q. 7

180°=_______ radians .

2 step solution

Q. 8

An object travels around a circle of radius r with constant speed. If s is the distance traveled in time t around the circle and θ is the central angle (in radians) swept out in time t , then the linear speed of the object is v=________ and the angular speed of the object is w=________ .

2 step solution

Q. 9

The angular speed w of an object traveling around a circle of radius r is the angle θ (measured in radians) swept out, divided by the elapsed time t .

2 step solution

Q. 10

For circular motion on a circle of radius r, linear speed equals angular speed divided by r .

2 step solution

Q. 11

Draw the angle in standard position.

30°

3 step solution

Q. 12

Draw the angle in standard position.

60°

3 step solution

Q. 13

Draw the angle in standard position.

135°

3 step solution

Q. 14

Draw the angle in standard position.

-120°

3 step solution

Q. 15

Draw the angle in standard position.

450°

3 step solution

Q. 16

 Draw the angle in standard position. 

540°

3 step solution

Q. 17

Draw the angle in standard position.

3π4

3 step solution

Q. 18

Draw the angle in standard position.

4π3

3 step solution

Q. 19

 Draw the angle in standard position. 

-π6

3 step solution

Q. 20

Draw the angle in standard position.  

-2π3

3 step solution

Q. 21

Draw the angle in standard position.  

16π3

3 step solution

Q. 22

Draw the angle in standard position.  

21π3

3 step solution

Q. 23

Convert each angle to a decimal in degrees. Round your answer to two decimal places.

40°10'25''


3 step solution

Q. 23.

In Problems 23–28, convert each angle to a decimal in degrees. Round your answer to two decimal places.

40°10'25''.

2 step solution

Q. 24

Convert each angle to a decimal in degrees. Round your answer to two decimal places.

61°42'21''

3 step solution

Q. 25

Convert each angle to a decimal in degrees. Round your answer to two decimal places.

1°2'3''

3 step solution

Q. 26

Convert each angle to a decimal in degrees. Round your answer to two decimal places.

73°40'40''

3 step solution

Q. 27

Convert each angle to a decimal in degrees. Round your answer to two decimal places.

9°9'9''

3 step solution

Q. 28

Convert each angle to a decimal in degrees. Round your answer to two decimal places.98°22'45''


3 step solution

Q. 29

Convert each angle to DMS form. Round your answer to the nearest second.

40.32°

3 step solution

Q. 30

Convert each angle to DMS form. Round your answer to the nearest second.

61.24°

3 step solution

Q. 31

Convert each angle to DMS form. Round your answer to the nearest second.

18.255°

3 step solution

Q. 32

convert each angle to DMS form. Round your answer to the nearest second.

29.411°

3 step solution

Q. 33

Convert each angle to DMS form. Round your answer to the nearest second.

19.99°

3 step solution

Q. 34

Convert each angle to DMS form. Round your answer to the nearest second.

44.01°

3 step solution

Q. 35

Convert each angle in degrees to radians. Express your answer as a multiple of π.

30°

3 step solution

Q. 36

Covert each angle in degrees to radians. Express your answer as a multiple of π.

3 step solution

Q. 37

Convert each angle in degrees to radians. Express your answer as a multiple of π.

240°

3 step solution

Q. 38

Convert each angle in degrees to radians. Express your answer as a multiple of π.

330°

3 step solution

Q. 39

Convert each angle in degrees to radians. Express your answer as a multiple of π.

-60°

3 step solution

Q. 40

Convert each angle in degrees to radians. Express your answer as a multiple of π.

-30°

3 step solution

Q. 41

Convert each angle in degrees to radians. Express your answer as a multiple of π.

180°

3 step solution

Q. 42

Convert each angle in degrees to radians. Express your answer as a multiple of π.

270°

3 step solution

Q. 43

Convert each angle in degrees to radians. Express your answer as a multiple of π.

-135°

3 step solution

Q. 44

Convert each angle in degree to radians. express your answer as a multiple of π.

-225°

3 step solution

Q. 45

Convert each angle in degrees to radians. Express your answer as a multiple of π.

-90°

3 step solution

Q. 46

Convert each angle in degrees to radians. Express your answer  as a multiple ofπ.

-180°

3 step solution

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