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Home > PC > Chapter 4 > Lesson 4.2.4 > Problem 4-112
4-112.
Verify the following trigonometric identities. Intermediate steps may involve complex fractions.
Substitute a Pythagorean Identity for
.
Substitute the Fundamental Pythagorean Identity into the left side of the equation for
.
Substitute a Pythagorean Identity for
.
Rewrite
as / .
Get common denominators and simplify.