1
QuizMultiple Choice
Trigonometric Half Angle Identities
Question 1 • Precalculus
What is the exact value of sin(112.5°)?
Answer
A
StartFraction 2 over StartStartRoot 2 minus StartRoot 2 EndRoot EndEndRoot EndFraction
B
StartFraction 2 over StartStartRoot 2 + StartRoot 2 EndRoot EndEndRoot EndFraction
C
StartFraction StartStartRoot 2 minus StartRoot 2 EndRoot EndEndRoot Over 2 EndFraction
D
StartFraction StartStartRoot 2 + StartRoot 2 EndRoot EndEndRoot Over 2 EndFraction