Given:
The equation is,
Step-by-step explanation:
Simplify the equation by using trigonometric identity.
Assume sin x = t, then
Solve the equation by splitting the middle term.
So,
There is no possible value of x, for sin x = 2.
Determine the value of x by using sin x = -1/5.
So possible values of x are -0.2014 and -2.9402.