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Which of the following are true? A. sin? + cos2 := 2 B. sin? 20 + cos? 20 = 2 C. sec2 - tan? = 1 D. csc2 20 - cot2 20 1 OB and D O C and D O A and B O A and C

Which of the following are true? A. sin? + cos2 := 2 B. sin? 20 + cos? 20 = 2 C. sec2 - tan? = 1 D. csc2 20 - cot2 20 1 OB and D O C and D O A and B O A and C

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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Which of the following are true? A. sin + cos? 2 B. sin? 20 + cos? 20 = 2 C. sec2 - tan? = 1 D. csc2 20 – cot2 20 = 1 O B and D O C and D O A and B O A and C
Transcribed Image Text:Which of the following are true? A. sin + cos? 2 B. sin? 20 + cos? 20 = 2 C. sec2 - tan? = 1 D. csc2 20 – cot2 20 = 1 O B and D O C and D O A and B O A and C
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