How do you Find on a unit circle that corresponds to t = 5 π /6.
and im also having trouble Finding the exact value of i dnt no how to get the exact value
Remember that we can rewrite coterminal angles by adding (or subtracting ) multiples of 2 Pi.
The first tells us to go around the unit circle 5 times (10 Pi radians)and the Pi/3 more times so
Will have the same out put for trig functions.
This diagram should help you discover that sine is an odd function.
Take a look and see if you can convince yourself. If you have any more questions just ask.