sabika13
How do I prove this: (secxcosx)(cscxsinx)=tanx/(1+tan^2x)



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sabika13
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left side: (1cos^2x)/cosx * (1sin^2x)/sinx
(sin^2xcos^2x)/(sinxcosx)
sinxcosx
is that right?

savvers
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hmmmm

savvers
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you have a calculater?

savvers
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with the sin cos

sabika13
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yeah i do, but imnot suppose to use a calculator for this

Mertsj
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\[(1/\cos\cos)(1/\sin\sin)=[ (1\cos^2)/\cos][(1\sin^2)/\sin]=(\sin^2/\cos)(\cos^2/\sin)\]