
Concept explainers
The values of six trigonometric functions using

Answer to Problem 12E
Explanation of Solution
Given:
The values of expressions,
Concept Used:
- Reciprocal identities of trigonometric functions:
- Quotient Identities:
- In Quadrant I, all trigonometric functions are positive.
- InQuadrant II, only sine and cosecant are positive.
- InQuadrant III, only tangent and cotangent are positive.
- InQuadrant IV, only cosine and secant are positive.
Calculation:
In order tofind the values of the six trigonometric functions, use the reciprocal and quotient identities of trigonometric functions.
Using the reciprocal and quotient identities, it gives
Thus, the values of the six trigonometric function is given by,
Chapter 5 Solutions
Precalculus with Limits: A Graphing Approach
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