how do you simplify sin2x=cosx
sin(2x) = cos(x)2sin(x)cos(x) = cos(x) Expand sin(2x). 2cos(x) 2cos(x) Divide 2cos(x) on each side. sin(x) = ¹/₂ sin⁻¹[sin(x)] = sin⁻¹(¹/₂) Use sin⁻¹(x) on each side. x = 30, 150 Find the answer.
