→ C mylab.pearson.com Use a half-angle identity to find the exact value. cos 195° cos 195° = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 16E
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12:42 AM Tue Dec 6
DAL MyLab and Mas X
Course Home X
P Do Homework X P Do Homework X
mylab.pearson.com
Use a half-angle identity to find the exact value.
cos 195°
9
13%
X +
cos 195° =
(Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
(
Transcribed Image Text:12:42 AM Tue Dec 6 DAL MyLab and Mas X Course Home X P Do Homework X P Do Homework X mylab.pearson.com Use a half-angle identity to find the exact value. cos 195° 9 13% X + cos 195° = (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) (
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