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# Finding Exact Trigonometric Values Using Sum and Difference Formulas

## Convert angles to sum or difference of 30, 45, and 60 degrees to solve.

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## Finding Exact Values of Trigonometric Functions using Sum and Difference Formulas - Overview

by CK-12 //basic

Overview

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## Finding Exact Values of Trigonometric Functions using Sum and Difference Formulas - Example 1

by CK-12 //basic

Find the exact value of a sine function using the sum and difference formula

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## Finding Exact Values of Trigonometric Functions using Sum and Difference Formulas - Example 2

by CK-12 //basic

Find the exact value of a cosine function using the sum and difference formula

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## Finding Exact Values of Trigonometric Functions using Sum and Difference Formulas - Example 3

by CK-12 //basic

Find the exact value of a tangent function using the sum and difference formula

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## Finding Exact Values of Trigonometric Functions using Sum and Difference Formulas - Example 4

by CK-12 //basic

Find the exact value of the expression given a sum or difference of two trigonometric functions

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## Finding Exact Values of Trigonometric Functions using Sum and Difference Formulas - Example 5

by CK-12 //basic

Find the exact value of the trigonometric function given an angle measure

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## Finding Exact Values of Trigonometric Functions using Sum and Difference Formulas - Example 6

by CK-12 //basic

Write the expression as the sine, cosine, or tangent of an angle

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## Finding Exact Values of Trigonometric Functions using Sum and Difference Formulas - Example 7

by CK-12 //basic

Find the exact value of the trigonometric function given the sine of one angle and the cosine of another angle

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## Finding Exact Values of Trigonometric Functions using Sum and Difference Formulas - Example 8

by CK-12 //basic

Simplify the trig expression algebraically using sum and difference formulas

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