8
QuizMultiple Choice
Trigonometric Double Angle Identities
Question 8 • 2025-2026 FBISD - Precalculus A (CR)
Suppose and cos(x) < 0. What is the value of cos(2x)?
Answer
A
Negative StartFraction 14 Over 25 EndFraction
B
Negative StartFraction 7 Over 25 EndFraction
C
StartFraction 7 Over 25 EndFraction
D
StartFraction 14 Over 25 EndFraction