Prove thatcot A+ tansCot B+ tan Ac ot Actors – InterviewSolution

1.

Prove thatcot A+ tansCot B+ tan Ac ot Actors

Answer»

LHS : cot A + tan B/ cot B + tan A= (cotA + 1/cotB) / (cotB + 1/cotA)

= (cotAcotB + 1) / cotB / (cotAcotB + 1) / cotA

= cotA / cotB

= cotA. tanB

= RHS

Hence proved

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