Concept explainers
To express: The trigonometric expression
Answer to Problem 63AYU
The expression is
Explanation of Solution
Given information:
The trigonometric expression
Formula used:
Cosine of angle
Pythagoras Theorem:- The hypotenuse of a right-angled triangle is equal in area to the sum of the squares on the other two sides.
Calculation:
Consider ,
Let
where
Now,
Using equation (i)
Hence , the algebraic expression is
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Precalculus
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