Find the indicated trig function of
θ, if θ is an angle in standard position with the terminal side defined by the given
(12, 16); Find cos θ.
answer is 4 over 5 but how do i find this?
please help :P
use Pythagoras' theorem to find the hypotenuse (or you could notice this is a 3-4-5 triangle). once you do that just plug in the values into the equation:
here, the adjacent side is 12 (you can see that from the diagram)