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Solve each equation for , or if you prefer, . You may need your calculator, but remember that your calculator only gives one value. Homework Help ✎

  1. Use inverse sine on your calculator to find one solution.

    It should tell you the answer is .

    Draw a unit circle to find the other angle that makes . The sine function is positive in quadrants I and II, so draw a reference angle of in each quadrant.

    partial answer a

  2. Follow the steps in part (a).

    partial answer b

  3. First solve the equation for .

    Follow the steps in part (a).