Mathematics, 20.10.2021 17:50 guccim5971
Rita is proving that the following trigonometric identity is true:
cos(−θ)sin(−θ)=−1tanθ
Which step would be the first line of her proof?
cosθsinθ=−1tanθ
cosθ−sinθ=−1tanθ
cos(−θ)sinθ=−1tanθ
cos(−θ)⋅tanθ=sin(−θ)
PLEASE ANSWER WILL MARK BRAINLIEST
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Rita is proving that the following trigonometric identity is true:
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