9
AssignmentMultiple Choice
Trigonometric Difference Identities
Question 9 • CUSD Advanced Math B (5.0)
Find the exact value of sin(140°)cos(20°) – cos(140°)sin(20°).
Answer
A
Negative one-half
B
Negative StartFraction StartRoot 3 EndRoot Over 2 EndFraction
C
StartFraction StartRoot 3 EndRoot Over 2 EndFraction
D
One-half