(cosec(90-Q)-sin(90-Q))(cosQ-sinQ)(tanQ+cotQ)=1
Please prove fast
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Answer:
cot (90-Q)/tanQ+cosec (90-Q)sinQ/tan(90-Q)
= tanQ/tanQ+secQ*sinQ/cotQ
= 1+1/cosQ*sinQ/cosQ/sinQ
=1+1/cosQ*sin^{2}Q/cosQ
=1+sin^{2}Q/cos^{2}Q
=sec^{2}Q
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