Question

find the exact value of: sin13pi/8

Answer 1

A) -sqrt2+sqrt2/4
B)sqrt2+sqrt2/4
C)-sqrt2-sqrt2/4
D)sqrt2-sqrt2/4

Answer 2

13pi/8=2pi-3pi/8

Answer 3

sin(13pi/8)=-sin(3pi/8)=-sqrt((1-cos(3pi/4))/2)

Answer 4

which one do you think it is? a, b, c, or d?

Answer 5

wait

Answer 6

ok :)

Answer 7

\[-\sqrt{(2+\sqrt{2})/4}\]

Answer 8

thank yoooooooouuuuuuuuu :)