Concept explainers
a.
Show that
a.
Answer to Problem 105AYU
Explanation of Solution
Given information:
Show that
Calculation:
Consider the given expression.
Now group the terms in the parentheses in to two,
Now apply sum formula of tangent.
Substitute
Now apply the sum formula of tangent inside the parentheses.
Now substitute
Hence,
b.
Show that
b.
Answer to Problem 105AYU
Explanation of Solution
Given information:
Show that
Calculation:
Consider the given expression.
It is proved that,
From the definition of inverse tangent function we know that,
So, we have
In the interval ,
Hence,
Chapter 7 Solutions
Precalculus
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