Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. (a) cos (36°) – sin?(36°) (b) cos?(60) – sin²(60)
Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. (a) cos (36°) – sin?(36°) (b) cos?(60) – sin²(60)
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Could you please write the questions clearly and understandably? Thank you.
![Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula.
(a) cos?(36°) – sin?(36°)
|1
(b) cos?(60) – sin²(60)
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Transcribed Image Text:Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula.
(a) cos?(36°) – sin?(36°)
|1
(b) cos?(60) – sin²(60)
Need Help?
Read It
Watch It
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