Concept explainers
a.
If all the trigonometric function of
a.
Answer to Problem 92E
The answer is yes.
Explanation of Solution
Given Information: A relevant figure.
As
All of the trigonometric functions exist for
Thus, the answer is yes.
b.
If the sign of the trigonometric functions will be positive or negative and then to explain the reasoning.
b.
Answer to Problem 92E
Only tangent and cotangent will be positive.
Explanation of Solution
Given Information: A relevant figure and results from previous part.
As the terminal point lies in the third quadrant, only tangent and cotangent will be positive, all other trigonometric functions will be negative. This is so because in third quadrant both
Chapter 4 Solutions
PRECALCULUS W/LIMITS:GRAPH.APPROACH(HS)
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