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Use a sum or difference formula to find the exact value of the following. 11 T 11 t sin 42 sin cos 7 cos 42 7

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter2: Equations And Inequalities

Section2.5: Other Types Of Equations

Problem 55E

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.

Question

Use a sum or difference formula to find the exact value of the following.
11 T
11 t
sin
42
sin
cos
42
7
Cos
7
?

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