Using Trigonometric Identities - Concept

Concept Concept (1)

When simplifying problems that have reciprocal trig functions, start by substituting in the identities for each. If possible, write tangent in terms of sine and cosine. Use algebra to eliminate any complex fractions, factor, or cancel common terms. When using trigonometric identities, make one side of the equation look like the other or work on both sides of the equation to arrive at an identity (like 1=1).

Sample Sample Problems (3)

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Using Trigonometric Identities - Problem 1
Problem 1
How to prove an identity using a Pythagorean identity and algebra.
Using Trigonometric Identities - Problem 2
Problem 2
How to simplify a trigonometric expression using a Pythagorean identity and algebra.
Using Trigonometric Identities - Problem 3
Problem 3
How to prove an identity using a Pythagorean identity and algebra.