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Math Help - write in terms of sin and cos

  1. #1
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    write in terms of sin and cos

    write in terms of sinθ and cosθ

    csc
    θ - sinθcot^2θ

    thanks so much. I keep getting different answers
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  2. #2
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    Hello, fotzefotze!

    Write in terms of \sin\theta\text{ and }\cos\theta

    . . \csc\theta - \sin\theta\cot^2\!\theta

    We have: . \frac{1}{\sin\theta} - \sin\theta\!\cdot\!\frac{\cos^2\!\theta}{\sin^2\!\  theta} \;=\;\frac{1}{\sin\theta} - \frac{\cos^2\!\theta}{\sin\theta} \;=\;\frac{1-\cos^2\!\theta}{\sin\theta} \;=\;\frac{\sin^2\!\theta}{\sin\theta} \;=\;\sin\theta

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