# trig

sinx+sinxcot^2x=cscx
prove each identity

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1. sinx + sinxcot^2x = sinx (1 + cot^2x)
= sinx*(sin^2+cos^2)/sin^2
= 1/sinx
= csc x

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2. LS = sinx(1 + cot^2x)
= sinx(csc^2x)
= sinx(1/sin^2x)
= 1/sinx
= cscx
= RS

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2. 👎 0

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