Question 715423
Find the exact trigonometric ratios for the angle x whose radian measure is given. (If an answer is undefined, enter UNDEFINED.)
−9π
**
angle -9π is like rotating clockwise 4-1/2 times around a unit circle terminating at a reference angle of π:
trigonometric ratios at this reference angle:
sinx=0
cosx=-1
tanx=0
cscx=undefined
secx=-1
cotx=undefined