Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. cos(5°) cos(85°) - sin(5°) sin(85°) Find its exact value.
Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. cos(5°) cos(85°) - sin(5°) sin(85°) Find its exact value.
Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter2: Analytic Trigonometry
Section: Chapter Questions
Problem 1T
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Transcribed Image Text:Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number.
cos(5°) cos(85°) - sin(5°) sin(85°)
Find its exact value.
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