cos x/1-sin x = sec x + tan x
Last edited by boltage619; Mar 23rd 2013 at 08:19 PM.
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cosx/(1-sinx) = cos x ( 1+sinx) /[(1-sinx)(1+sinx)] = cos x ( 1+sinx) /(1-sin^2x) = cos x ( 1+sinx) /cos^2x = (1+sin x )/ cos x = 1/cosx + sin x / cos x = sec x + tan x
I find it rude to be ordered to show every step when the OP has not shown any effort to do a single step him/herself...
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