sin(증+ ) sin(증-지) + sin = COS X We begin on the left side of the equation by using Sum and Difference Formulas. We can then combine like terms, fi exact values, and simplify. sin + *) + sin( - x) - ((an| sin x) + (sin Cos x + cos COS X - COS sin = = 2( sin COS X = 2 COS X = COS X
sin(증+ ) sin(증-지) + sin = COS X We begin on the left side of the equation by using Sum and Difference Formulas. We can then combine like terms, fi exact values, and simplify. sin + *) + sin( - x) - ((an| sin x) + (sin Cos x + cos COS X - COS sin = = 2( sin COS X = 2 COS X = COS X
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.3: Trigonometric Functions Of Real Numbers
Problem 43E
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