CCGPS AA 5.3.1 Example 3

Author:
Walch Education
Topic:
Cosine, Sine
Given that , what is the value of if angle lies in the first quadrant of the coordinate plane? Round your answer to the nearest hundredth.
  1. Use the Pythagorean identity to determine the value of .
  2. Determine the value of if angle lies in the first quadrant.
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