Question

Find the exact value by using a half-angle identity. (4 points)

sin 7 pie/8

Answer 1

\[\sin(\frac{1}{2} \theta)=\pm \sqrt{\frac{1+\cos(x)}{2}}\]

Answer 2

\[\frac{7 \pi}{8}=\frac{1}{2} \theta\]
what is theta?

Answer 3

you solve solve that and see what theta is

Answer 4

oops x is theta

Answer 5

\[\sin(\frac{1}{2} \theta)=\pm \sqrt{\frac{1+\cos(\theta)}{2}}\]

Answer 6

also we know sin(7pi/8) will be positive since 7pi/8 is in the second quadrant

Answer 7

mmm pie

Answer 8

no sweets here @satellite73
only numbers that deceive you are