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7 7. Given cos a = – 25 12 , a is in quadrant II, and sin ß = ‚ß in quadrant IV, find the precise - 13 values of sin(a +ß), cos(a + B), and tan(a – B)

7 7. Given cos a = – 25 12 , a is in quadrant II, and sin ß = ‚ß in quadrant IV, find the precise - 13 values of sin(a +ß), cos(a + B), and tan(a – B)

Trigonometry (11th Edition)
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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7. Given \( \cos \alpha = -\frac{7}{25} \), \(\alpha\) is in quadrant II, and \( \sin \beta = -\frac{12}{13} \), \(\beta\) in quadrant IV, find the precise values of \(\sin(\alpha + \beta)\), \(\cos(\alpha + \beta)\), and \(\tan(\alpha - \beta)\).
Transcribed Image Text:7. Given \( \cos \alpha = -\frac{7}{25} \), \(\alpha\) is in quadrant II, and \( \sin \beta = -\frac{12}{13} \), \(\beta\) in quadrant IV, find the precise values of \(\sin(\alpha + \beta)\), \(\cos(\alpha + \beta)\), and \(\tan(\alpha - \beta)\).
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