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9-11.

Solve each equation for . You may need your calculator, but remember that your calculator only gives one answer. Most of these problems have more than one answer. Think about all four quadrants.

  1. sin

    Where is the sin? Remember sin is the -value. What would be at those places?

  1. cos

    Where is the cos? Remember cos is the -value. What would be at those places?

  1. tan

    Solve for the tan. Draw a unit circle. Where is the tan of that value?

  1. sin

    Use your calculator to get one of the values. Then use symmetry to get the other values. There are values because when you take the square root of both sides the answer would be plus or minus!