Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN: 9781133382119
Author: Swokowski
Publisher: Cengage
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7. Which compound angle formula is the easiest to use to develop the expression
cos²0 - sin²0?
a. Addition formula for sine
b. Addition formula for cosine
c. Subtraction formula for sine
d. Subtraction formula for cosine
8. Which of the following expressions is NOT equivalent to sin75° ?
a. sin45° + sin30°
b. sin(45° +30°)
c. sin105°
d. sin45°cos30° + sin30°cos45°
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Transcribed Image Text:7. Which compound angle formula is the easiest to use to develop the expression cos²0 - sin²0? a. Addition formula for sine b. Addition formula for cosine c. Subtraction formula for sine d. Subtraction formula for cosine 8. Which of the following expressions is NOT equivalent to sin75° ? a. sin45° + sin30° b. sin(45° +30°) c. sin105° d. sin45°cos30° + sin30°cos45°
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