Question

if sin( x- 20 )equal to cos (3 x - 10) then find the value of x

Answer 1

Hope thiS will help u

Answer 2

Sin (x - 20) = cos (3x -10)

Then,

3x -10 = 90 -(x -20)

Since

Sin a = cos (90 - a)

Now,

3x -10 = 90 - x + 20

4x = 120

x = 30 degree.

Value of x is 30 degree.