Question

If tan 2A is equal to COT A + 60 find the value of a when to a is an acute angle

Answer 1

tan 2A = Cot( A + 60 )

cot(90*-2A) = Cot(A + 60*)

90* - 2A = A + 60*

90*-60* = A + 2A

30* = 3A

SO, A = 10*