To find: The value of expression
The value of
Given information: The given value is
Formula used: The difference formula for cosine is given by:
Calculation:
Use Pythagorean identity to find the value of cosine function.
Substitute
The angle
Use Pythagorean identity to find the value of cosine function.
Substitute
The angle
Substitute
Therefore, the value of
Chapter 10 Solutions
Holt Mcdougal Larson Algebra 2: Student Edition 2012
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