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°)
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°)
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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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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