proving (sin A + cos A) (tan A + cot A) = sec A + csc A

Trigonometric ratios and functions, the unit circle, inverse trig functions, identities, trig graphs, etc.
misstokyo
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proving (sin A + cos A) (tan A + cot A) = sec A + csc A

Postby misstokyo » Mon Sep 13, 2010 8:27 am

(sin A + cos A) (tan A + cot A) = sec A + csc A

any help would be great!

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Martingale
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Re: proving (sin A + cos A) (tan A + cot A) = sec A + csc A

Postby Martingale » Mon Sep 13, 2010 11:36 am

misstokyo wrote:(sin A + cos A) (tan A + cot A) = sec A + csc A

any help would be great!


Expand the left hand side and write everything in terms of sine and cosine.


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