11. Determine the correct simplification of the expression (1+ cos a)(1 - cos a). a. 1- sin a b. Cos? c. sin a 1+ cos? a d.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 40E
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Determine the correct simplification of the expression (1+ cos a)(1 - cos a).
c. sin a
11.
a. 1- sin? a
b. cos a
d. 1+ cos a
Transcribed Image Text:Determine the correct simplification of the expression (1+ cos a)(1 - cos a). c. sin a 11. a. 1- sin? a b. cos a d. 1+ cos a
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