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  1. #1
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    Write the following in terms of sin(θ) only, assume 0 ≤ θ ≤ 90. (Remember to enter trigonometric powers such as sin2(x) as (sin(x))2.)
    cot(θ) =



    I don't even know how to start it.
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  2. #2
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    Quote Originally Posted by garbles View Post
    Write the following in terms of sin(θ) only, assume 0 ≤ θ ≤ 90. (Remember to enter trigonometric powers such as sin2(x) as (sin(x))2.)
    cot(θ) =



    I don't even know how to start it.
    1
    start with the identity ...

    \cot{\theta} = \frac{\cos{\theta}}{\sin{\theta}}

    also, this identity may help ...

    \cos{\theta} = \sin(90^\circ -\theta)
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