SOLUTION: Solve the equation. 0 is less than or equal to theta and theta is less than 2 pi. -4 + cos (-theta + 11pi/6) = -4

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Question 753096: Solve the equation. 0 is less than or equal to theta and theta is less than 2 pi.
-4 + cos (-theta + 11pi/6) = -4
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Solve the equation. 0 is less than or equal to theta and theta is less than 2 pi.
-4 + cos (-theta + 11pi/6) = -4
cos (-theta + 11pi/6) =0
-theta+11pi/6=pi/2, 3pi/2
..
theta=11pi%2F6-pi%2F2
theta=11pi%2F6-3pi%2F6
theta=8pi%2F6
or
theta=11pi%2F6-3pi%2F2
theta=11pi%2F6-9pi%2F6
theta=2pi%2F6=pi%2F3