Concept explainers
To find: the exact values of the sine, cosine and tangent of the angle.
Answer to Problem 70RE
Explanation of Solution
Given information:
Given angle,
Formula used:
Calculation:
Find the value of sine, cosine and tangent of the angle
Multiplying numerator and denominator by
Hence,
Find exact values of the cosine of the above angle as below
Taking cosine on both sides as below
Using the sum formula
Multiplying numerator and denominator by
Hence,
Find the exact values of the tangent of the above angle as below
Taking tangent on both sides as below
Hence,.
Chapter 5 Solutions
Precalculus with Limits: A Graphing Approach
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