Concept explainers
To prove: The identity.

Explanation of Solution
Given information:
The identity:
Formula used:
Trigonometric formula:
Calculation:
The given identity is
Simplify the right hand side of the given identity using the formula
Use the formula
Use the formula
Thus, Right Hand Side = :Left Hand Side
Hence, the identity is proved.
Chapter 5 Solutions
PRECALCULUS W/LIMITS:GRAPH.APPROACH(HS)
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