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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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Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
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• Video

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

by CK-12 //basic
Overview
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• Video

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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• Video

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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• Video

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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• Video

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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• Video

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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• Video

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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• Video

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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