Q.10:- if f(x) = sinx, prove that 1/f(x) -f(x) = cotx * cosx
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Step-by-step explanation:
f(x) = sinx
= 1/sinx - sinx
= 1 - sin²x / sinx { LCM}
= cos²x / sinx
= cosx / sinx × cosx
= cotx × cosx
Hence proved
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