To find: the exact value of the function by using sum or difference identities.
Answer to Problem 24E
Explanation of Solution
Given information:
Calculation:
Simplify the function as follows:
Now apply the sum identity for sine in the above simplified function as shown below.
Put the values for the trigonometric function and evaluate
Thus the exact value of the given function is
Chapter 7 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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