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5-9.

Evaluate each of the following trigonometric expressions without a calculator.

Compute without a calculator

  1. Unit Circle, with right triangle in fourth quadrant, with point on circle, about half way between positive x axis and negative y axis, with the radius as the hypotenuse, vertical leg is Dashed segment, vertical & horizontal legs, each labeled 1 half Times Square root of 2.

  1. Unit Circle, with right triangle in fourth quadrant, with point on circle, about 2 thirds of the way between positive x axis and negative y axis, with the radius as the hypotenuse, vertical leg is Dashed segment, labeled 1 half Times Square root of 3, horizontal leg, labeled 1 half.

  1. What is the slope of the line associated with an angle of ?