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Thread: trig equality - stick

  1. February 28th 2009, 02:02 PM #1
    TYTY
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    trig equality - stick

    \frac{(\sqrt{5}tan \theta)^2*\sqrt{5}sec^2 \theta}{\sqrt{5 +5tan^2\theta}}

    is supposed to equal 5tan^2\theta

    it's the part in the middle that's screwing me
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  2. February 28th 2009, 02:52 PM #2
    skeeter
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    did you post the numerator correctly?

    here's what can be done with the denominator ...

    \sqrt{5 + 5\tan^2{\theta}}<br />

    \sqrt{5(1 + \tan^2{\theta})}<br />

    \sqrt{5\sec^2{\theta}}
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