x, y be two acute angles, x + y < $$90^\circ$$ and sin(2x -$$20^\circ$$) = cos(2y + $$20^\circ$$), the value of tan(x + y) is
The value of $$\sin\theta and \cos \theta are equal when \theta=45\degree$$
2x - 20 = 45 =>x = 32.5
2y + 20 =45 => y = 12.5
$$\tan(32.5+12.5) = \tan45\degree = 1$$
So, the answer would be option c)1
Create a FREE account and get:
