45
RCMultiple Choice
Trigonometric Sum Identities — Cumulative exam
Question 45 • Precalculus
What is the exact value of cos(c + d), given for c in Quadrant II and for d in Quadrant III?
Answer
A
Negative StartFraction 47 Over 100 EndFraction
B
Negative 1 and StartFraction 3 Over 100 EndFraction
C
StartFraction 21 minus 24 StartRoot 7 EndRoot Over 100 EndFraction
D
StartFraction 21 + 24 StartRoot 7 EndRoot Over 100 EndFraction