SOLUTION: The solution set for the equation {{{ Cos (theta) = -sqrt(2)/2 }}} is (135, 225 deg), use this to solve {{{ Cos (theta/2) = -sqrt(2)/2 }}} over the interval of (0,360)

Question 1113422: The solution set for the equation is (135, 225 deg), use this to solve over the interval of (0,360)
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

If

then

and

but

.

Therefore

for

John

My calculator said it, I believe it, that settles it

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