Question

2sin2x-tan45=cos90 find x

Answer 1

Answer:

x = 15

Step-by-step explanation:

$2 \sin(2 \alpha ) - \tan(45) = \cos(90)$

$2 \sin(2 \alpha ) - 1 = 0$

$2 \sin(2 \alpha ) = 1$

$\sin(2 \alpha ) = \frac{1}{2}$

$\sin(2 \alpha ) = 30$

$2 \alpha = 30$

$\alpha = 15$

Here Alpha and x have the same meaning