Hey i need help finding the exact measures for these two trig ratios
cot(4pi/3)
cos(-19pi/6)
Well, how would you solve ? Can you think of anything equivalent to this? Think of the unit circle - which other value for tan will give an equivalent result?
For , it's the same idea. Remember that is periodic every radians, so you can keep adding to the value in the brackets and your answer will be unchanged.