Question

Which equation can be used to determine the reference angle r if 7pi/12?

Answer 1

7pi/12 > pi/2, This means it is in 2nd quadrant.
For angles in 2nd quadrant, subtract from pi to get reference angle.

pi - 7pi/12 = 5pi/12

Answer 2

Explanation:

Alright, lets get started.

Please refer the diagram I have attached.

If we draw the given angle
`(7\pi )/(12)`, the terminal side will be in second quadrant.

So the reference angle will be the angle between x axis and the terminal side of given angle.

For this, we have to subtract it from
`\pi`

So the reference angle will be :
`\pi-(7\pi)/(12)`

making common denominator

reference angle =
`(12\pi)/(12)-(7\pi)/(12)`

reference angle =
`(5\pi)/(12)` : Answer

Hope it will help :)