Question

If x is in first quadrant and sinx = cosx, find value of x? ​

Answer 1

Answer:

Hey frnd...

Here is ur ans

Step-by-step explanation:

$\sin(x ) = \cos(x) ........(1) \\ as \: \cos(90 - x) = \sin(x) \\ put \: this \: value \: in \: (1) \\ \cos(90 - x) = \cos(x) \\ 90 - x = x \\ 90 = 2x \\ x = \frac{90}{2} \\ x = 45$

Hope this helps u...

Answer 2

Answer:

cos (90-x)=sin (x)

x=45