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State the sum and difference formulas for the cosine. cos (x + y) = cos (x) cos (y) - sin (y) sin(x) cos (x - y) = sin (x) cos (y) - sin (y) cos(x) cos (x + y) = sin (x) cos (y) + sin (y) cos(x) cos (x - y) = cos (x) cos (y) + sin (y) sin(x)

State the sum and difference formulas for the cosine. cos (x + y) = cos (x) cos (y) - sin (y) sin(x) cos (x - y) = sin (x) cos (y) - sin (y) cos(x) cos (x + y) = sin (x) cos (y) + sin (y) cos(x) cos (x - y) = cos (x) cos (y) + sin (y) sin(x)

Algebra & Trigonometry with Analytic Geometry
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 44E
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State the sum and difference formulas for the cosine. cos (x + y) = cos (x) cos (y) - sin (y) sin(x) cos (x - y): = sin(x) cos (y) - sin (y) cos(x) cos (x + y) = sin (x) cos (y) + sin (y) cos(x) cos (x - y) = cos (x) cos (y) + sin (y) sin(x)
Transcribed Image Text:State the sum and difference formulas for the cosine. cos (x + y) = cos (x) cos (y) - sin (y) sin(x) cos (x - y): = sin(x) cos (y) - sin (y) cos(x) cos (x + y) = sin (x) cos (y) + sin (y) cos(x) cos (x - y) = cos (x) cos (y) + sin (y) sin(x)
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