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1-158.

Without using a calculator, determine the exact value of each of the following trig expressions.No calculator icon Homework Help ✎

  1. sin()

    Visualize the angle on the unit circle. What side ratio correspond with that angle? What quadrant is it in? (This will determine whether your answer will be positive or negative.)

  2. cos()

    See hint in part (a).

  3. tan()

  4. sec()