Trigonometry : Radians and Conversions

Study concepts, example questions & explanations for Trigonometry

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Example Questions

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Example Question #13 : Unit Circle And Radians

Change a  angle to radians.

Possible Answers:

Correct answer:

Explanation:

In order to change an angle into radians, you must multiply the angle by .

Therefore, to solve:

Example Question #14 : Unit Circle And Radians

Change  angle to degrees.

Possible Answers:

Correct answer:

Explanation:

In order to change an angle into degrees, you must multiply the radian by .

Therefore, to solve:

Example Question #15 : Unit Circle And Radians

Give in radians:

 

Possible Answers:

Correct answer:

Explanation:

First we need to convert degrees to radians by multiplying by :

 

 

Now we can write:

 

 

Example Question #16 : Unit Circle And Radians

Give in radians:

 

Possible Answers:

Correct answer:

Explanation:

First we need to convert degrees to radians by multiplying by :

 

 

Now we can write:

 

Example Question #17 : Unit Circle And Radians

Give in degrees:

 

Possible Answers:

Correct answer:

Explanation:

First we can find in radians:

 

 

To change radians to degrees we need to multiply radians by . So we can write:

 

 

Example Question #18 : Unit Circle And Radians

Give in degrees:

 

Possible Answers:

Correct answer:

Explanation:

First we can find in radians:

 

To change radians to degrees we need to multiply radians by . So we can write:

 

Example Question #1 : Radians And Conversions

Give in radians:

 

Possible Answers:

Correct answer:

Explanation:

First we need to convert to radians by multiplying by :

 

 

Now we can solve the following equation for :

 

Example Question #2 : Radians And Conversions

Give in degrees:

 

Possible Answers:

Correct answer:

Explanation:

First we can find in radians:

 

To change radians to degrees we need to multiply radians by . So we can write:

 

Example Question #3 : Radians And Conversions

Convert the angle  into degrees.

Possible Answers:

Correct answer:

Explanation:

To convert radians to degrees, use the conversion .

In this case:

Example Question #4 : Radians And Conversions

How many radians are in ?

Possible Answers:

Correct answer:

Explanation:

Since, we can solve by setting up a proportion:

Cross-multiply and solve.

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