Question

tan(60°-A)-Cot(25°+A)​

Answer 1

Tan (60-A) - cot (25+A)

=> tan ( 60-A ) - tan ( 90 -25 + A ) = 0

=> tan (60-A) - tan (65+A) = 0

=> 60-A - (65+A ) = 0

=> 60-65 - 2A= 0

=> -2A = 5

=> A= 5/-2


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