SOLUTION: Give an expression that is equivalent to: cos(θ+(π/2). Thank You

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Question 42452: Give an expression that is equivalent to: cos(θ+(π/2).
Thank You
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
cos(q + (pi)/2) = cos q cos (pi)/2 - sin q sin (pi)/2 =
cos q * 0 - sin q * 1 =
-sin q
that is,
minus sin theta