Find the reference angle for 6 pi5 Find the reterener angle

Find the reference angle for 6 pi/5

Solution

6 pi/5 = 216 degree

Determine the quadrant in which the terminal side lies.

A 216 degree angle is between 180 and 270 degrees, so the terminal side is in QIII.

then, Do the operation indicated for that quadrant.

Subtract 180 degrees from the angle, which is 216 degrees. You find that 216 – 180 = 36,

so the reference angle = 36 degrees = pi/5 radian