Write a few paragraphs outlining your strategy for establishing identities.
To find: The strategy for establishing an identity.
Answer to Problem 107AYU
Solution:
The strategy for establishing an identity is,
Consider a circle with radius .
Let be a terminal point on the circle which makes an angle of with the Centre of the circle (origin).
By definition of six trigonometric functions.
We can obtain the identities.
For example Pythagorean identity.
Adding up the quotients.
By the equation of the circle.
Explanation of Solution
The strategy for establishing an identity is:
Consider a circle with radius .
Let be a terminal point on the circle which makes an angle of with the Centre of the circle (origin).
By definition of six trigonometric functions.
We can obtain the identities.
For example Pythagorean identity.
Adding up the quotients.
By the equation of the circle.
Chapter 7 Solutions
Precalculus Enhanced with Graphing Utilities
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