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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:The image contains trigonometric notations for the cosine values of two specific angles:
- "cos 45°"
- "cos 60°"
These denote the cosine values for angles 45 degrees and 60 degrees, respectively.
Cosine is one of the primary trigonometric functions and is defined for an angle in a right triangle as the length of the adjacent side divided by the length of the hypotenuse. For the angles given, the values can be derived as follows:
- \( \cos 45^\circ = \frac{\sqrt{2}}{2} \approx 0.707 \)
- \( \cos 60^\circ = \frac{1}{2} = 0.5 \)
These values are fundamental in trigonometry and are widely used in various applications within mathematics, physics, and engineering.
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