Question

What is the sine value of (5pi / 3)?

@kirbykirby

Answer 1

sin (5π / 3) ?

Answer 2

yes

Answer 3

sin(5π/3)=sin(5 ×180 /3)=sin(5 ×60)= sin(300) = sin(360-60)

Answer 4

sin(a-b)=sin(a)cos(b)-sin(b)cos(a)

Answer 5

sin x = 5π / 3 ?

Answer 6

??? im so confused

Answer 7

you are not even telling me what the question is... sorry but I will have to abandon you (at least for now)

Answer 8

these are my options:
a. negative square root 3 / 2
b. square root 3 / 2
c. - 1 / 2
d. 1 / 2
@SolomonZelman

Answer 9

If you know the unit circle.. you can use symmetry arguments to find the 5pi/3 value... If you know that \(\large \sin\left( \frac{\pi}{3}\right)=\frac{\sqrt{3}}{2}\) .. then sketching the circle shows:

Answer 10

so by using the unit circle it is A

Answer 11

yes

Answer 12

thanks again!

Answer 13

=]