9. Sec. 2.1 Simplify the following expression using exact values. (a) sin?(45°) – 2 sin(45°) cos(45°) + cos²(45°) (b) -2 sin(90° – 60°)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.2: Trigonometric Equations
Problem 106E
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9. Sec. 2.1 Simplify the following expression using exact values.
(a) sin?(45°) – 2 sin(45°) cos(45°) + cos²(45°)
(b) -2 sin(90° – 60°)
Transcribed Image Text:9. Sec. 2.1 Simplify the following expression using exact values. (a) sin?(45°) – 2 sin(45°) cos(45°) + cos²(45°) (b) -2 sin(90° – 60°)
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