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Math Help - Simplifying a trigonometric expression.

  1. #1
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    Simplifying a trigonometric expression.

    I'm sure this a has a simple solution, but I'm just not seeing where to start with this.

    1 - \frac{cos^2x}{1+sin x}

    Thank you so much!
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  2. #2
    MHF Contributor
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    Quote Originally Posted by JennyFlowers View Post
    I'm sure this a has a simple solution, but I'm just not seeing where to start with this.

    1 - \frac{cos^2x}{1+sin x}

    Thank you so much!
    Use

    Cos^2x+Sin^2x=1\Rightarrow\ Cos^2x=1-Sin^2x=(1+Sinx)(1-Sinx)
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