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12-111.

Without using a calculator, solve each equation below in the domain .

  1.  

    Reference the unit circle to help solve this problem.
    For which angle(s) in the circle does .

  1.  

    Solve the equation for .

    For which angle(s) in the unit circle does ?

  1.  

    Refer to part (a).

  1.  

    How would you solve
    In this case sin.

Compute without a calculator