Question

Use a half angle identity to find the approximate value of sin15(degrees)

Answer 1

half of 30 is 15
use the half angle formula with \(\theta=30\) and \(\frac{\theta}{2}=15\)

Answer 2

A. 0.26
b. 0.5
c. 1
d. radical 2

Answer 3

god bless multiple choice

Answer 4

since \(\sqrt2>1\) you can ignore that one

Answer 5

since \(\sin(90)=1\) you can ignore that one too

Answer 6

either a or b?

Answer 7

do you know the half angle identity?