20
QuizMultiple Choice
Solving Trigonometric Equations — Unit test
Question 20 of 25 • Precalculus
Suppose and cos(x) < 0. What the value of cos(2x)?
Answer
A
Negative StartFraction 16 Over 25 EndFraction
B
Negative StartFraction 7 Over 25 EndFraction
C
StartFraction 7 Over 25 EndFraction
D
StartFraction 16 Over 25 EndFraction