Question 923723
Write in terms of sine and cosine: 
cos^2 θ(tan^2 θ+1) = cos^2*sec^2 = 1
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(secθ-cosθ)/(sinθ) = ((/cos)-cos)/sin = ((1-cos^2)/cos) / sin
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= (sin^2/cos)/sin = sin/cos = tan(theta)
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 Simplify the trig expression to a power of a single trig function: 
(sec^2x-1)/(sec^2x) = (1 - (1/sec^2(x)) = (1-cos^2(x)) = sin^2(x)
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Please be descriptive on how these are solved
Cheers,
Stan H.
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