Question

How to find exact value... of sin (2π)/3

Answer 1

what do you mean? with what means? calculator, sequence, approximation?

Answer 2

\[\sqrt{3}/2\]

Answer 3

Refer to the unit circle

Answer 4

Remember that pi is equal to 180 degrees and 2pi is 360 degrees. So, this one is 360/3 or 120 degrees.

This angle is in the 2nd quadrant and the angle of reference (always from the x axis) is 60 degrees. The sin of 60 is the square root of 3 over 2. And, since it's in the 2nd quadrant, it is positive. Remember sin is positive in the 1st and 2nd quadrant and negative in the 3rd and 4th.

Answer 5

Good answer Beeb

Answer 6

stole it though...but your hint made me look it up

Answer 7

\[what is \sin 2\pi ? \it is 0 do you mean \sin(2\pi/3)? this is the same as \sin \pi/3\] beep and radar gave you good hints

Answer 8

Should be helpful to alive