If tan 2 A=cot(A-18 degree) where 2 A is an acute angle find the value of A
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Step-by-step explanation:
Cot ( 90 - x ) = tan x
Tan 2A = cot ( A - 18 )
Cot ( 90 - 2A ) = cot ( A - 18 )
90 - 2A = A - 18
-2A - A = - 18 - 90
- 3A = - 108
A = ( - 108 ) / ( - 3 )
A = 36°
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