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[mentor note] moved to homework forum hence no template.

HI,

I'm just having a bit of trouble with the numerator part of this identity ...

Resolving the the denominator is fairly straightforward but ..

Can anyone shed light on the final couple of steps

(sin^3 x - cos^3 x)/(sinx + cosx) = (csc^2 x - cotx - 2cos^2 x)/(1 - cot^2 x)

(sine cubed, cosine cubed, cosec squared, cosine squared, cotangent squared)

I hope I've transcribed it correctly .

Peter

HI,

I'm just having a bit of trouble with the numerator part of this identity ...

Resolving the the denominator is fairly straightforward but ..

Can anyone shed light on the final couple of steps

(sin^3 x - cos^3 x)/(sinx + cosx) = (csc^2 x - cotx - 2cos^2 x)/(1 - cot^2 x)

(sine cubed, cosine cubed, cosec squared, cosine squared, cotangent squared)

I hope I've transcribed it correctly .

Peter

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