SOLUTION: determine the exact and simplified value of cos^240°-2tan60°sec30°. include a picture of the two special triangles.

Question 1182094: determine the exact and simplified value of cos^240°-2tan60°sec30°. include a picture of the two special triangles.
Answer by ikleyn(52932) (Show Source): You can put this solution on YOUR website!
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determine the exact and simplified value of cos240°-2tan60°sec30°.
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cos(240°) = -cos(60°) = .


tan(60°) = .


sec(30°) =  =  = .



Therefore,  cos240°-2tan60°sec30° =  -  =  - 4 = - 4  = - 4.5.    ANSWER

Solved.

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