
Home > PC > Chapter 9 > Lesson 9.3.4 > Problem 9-147
9-147.
Factor.
Simplify using identity.
Substitute:
sin2x = 1 − cos2x
Simplify.
Divide both sides by −2.
Square root both sides.
Solve for x.
Factor.
Simplify using identity.
Substitute:
sin2x = 1 − cos2x
Simplify.
Divide both sides by −2.
Square root both sides.
Solve for x.