Concept explainers
(a)
To represent:Thetrigonometric expression
(a)
Answer to Problem 90E
Thetrigonometric expression
Explanation of Solution
Given information:
The given equationis
Formula Used:
Proof:
Compare the expression
Calculate the value of
Calculate the value of
Consider the left hand side of the equation.
Draw the graph for
Figure (1)
From the above, it is clear that both the graph coincide. Therefore, the trigonometric expression
(b)
To represent:The trigonometric expression
(b)
Answer to Problem 90E
Thetrigonometric expression
Explanation of Solution
Given information:
The given equationis
Formula Used:
Proof:
Compare the expression
Calculate the value of
Calculate the value of
Consider the left hand side of the equation.
Draw the graph for
Figure (2)
From the above, it is clear that both the graph coincide. Therefore, the trigonometric expression
Chapter 5 Solutions
PRECALCULUS W/LIMITS:GRAPH.APPROACH(HS)
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