SOLUTION: Find the exact value of cot(-315deg) a. 1 b. sqrt 2 c. sqrt/2 d. 2

Algebra ->  Trigonometry-basics -> SOLUTION: Find the exact value of cot(-315deg) a. 1 b. sqrt 2 c. sqrt/2 d. 2       Log On


   

Question 340964: Find the exact value of cot(-315deg)
a. 1
b. sqrt 2
c. sqrt/2
d. 2
Answer by jrfrunner(365) About Me  (Show Source):
You can put this solution on YOUR website!
if you go -315 degrees, you basically go clockwise and end up in quadrant I at 45 degrees, here x=sqrt%282%29%2F2 and y=sqrt%282%29%2F2
--
Cot(theta) = x/y
cot%28-315%29=cot%2845%29=%28sqrt%282%29%2F2%29%2F%28sqrt%282%29%2F2%29=1