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Home > CALC > Chapter 1 > Lesson 1.4.2 > Problem 1-158


Without using a calculator, find the values of each of the following trig expressions.

  1. 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.)

  1. See hint in part (a).

  1. Recall that 

  1. Recall that 

Compute without a calculator