3
QuizMultiple Choice
Trigonometric Difference Identities
Question 3 • Precalculus
Given: cos(3x – 180°) = , where 0 ≤ x < 180°Which values represent the solutions to the equation?
Answer
A
{10°, 110°, 130°}B
{20°, 100°, 140°}C
{30°, 330°, 390°}D
{60°, 300°, 420°}