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

Question

anonymous · Answer

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

radar · Answer

$$\sqrt{3}/2$$

radar · Answer

Refer to the unit circle

anonymous · Answer

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.

radar · Answer

Good answer Beeb

anonymous · Answer

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

anonymous · Answer

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

radar · Answer

Should be helpful to alive