Question

evaluate this ..........​

Answer 1

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Answer 2

Solution :-. from LHS

tanA + tanB / cotA + cotB.

As we know , cot¢ = 1/tan¢

So , tanA + tanB / 1/ tanA + 1/tanB

= tanA + tanB / tanB + TanA /tanA* tanB

tanA + tanB will be cancelled from numerator to denominator .

= 1/1/tanA*TanB

= tanA * tanB RHS

LHS= RHS PROVED

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