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12-68.

Solve each equation below for if

  1. Divide both sides by .

    Take the square root of both sides to solve for sin.

    Find the corresponding angles on the unit circle.

    Circle, centered at the origin, with 2 additional red diameters, between opposite points in the four quadrants, labeled as follows: first, pi sixths, second, 5 pi sixths, third, 7 pi sixths, fourth, 11 pi sixths.

  1. Follow the steps in part (a).