Question 964790
Prove that: 
secx/sinx - sinx/cosx = cotx is an identity.
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sec/sin - sin/cos = cos/sin
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Multiply thru by sin to get:
1/cos - sin^2/cos = cos
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Multiply thru by cos to get:
1 - sin^2 = cos^2
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cos^2 = cos^2
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Cheers,
Stan H.