Question

find the reference angle theta= 5pi/4

Answer 1

hello?

Answer 2

got a Unit Circle around?

Answer 3

yes

Answer 4

well, the reference angle is the angle makes with the x-axis
so

Answer 5

would it be 135 or 45?

Answer 6

45 or \(\bf \cfrac{\pi}{4}\)

Answer 7

to add to @jdoe0001, it is the angle between 0 and 90 (or, in radians, 0 and pi/4) that has the same angle measure to the horizontal axis.
It would be 45.

Answer 8

thank you!

Answer 9

yw