Question

IF tan 2A= cos (A-18), where 2A is an acute angle, find the value of A.

Answer 1

Heya !!

Here is your answer..

Since, tan 2A = cot ( 90° - 2A )

Therefore, cot( 90° - 2A ) = cot ( A - 18° )

==> 90° - 2A = A -18°

==> 90° + 18 = A + 2A

==> 108° = 3A

==> A = 36°

Hope it helps.

Answer 2

Hey
Here is Ur answer

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bro wo cos nhi cot h _________________________________________________________

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