1.

Its a trigo sum. prove it.

Answer» HEY frnd here is ur ANS.....¡¡¡

CotA + tanB / CotB + tanA

(CotA+1/ CotB) / (CotB +1/CotA)

(CotACotB + 1)/ CotA /(CotACotB + 1)/ CotA

CotA / CotB

CotA tanA..... Hence proved RHS

Hope it HELPS you✌✌

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