Question

Find cosθ if θ is an angle in standard position and the point with coordinates (-12, 5) lies on the terminal side of the angle.

Answer 1

Well, \(\tan(\theta) = \dfrac{5}{-12}\) and the cosine will be negative. Can you draw a Right Triangle and calculate the length of the hypotenuse?

Answer 2

yeah i can one second ill try it

Answer 3

so the hypotenuse would be 13 right? @tkhunny

Answer 4

you are right @ejune420

Answer 5

now can u tell me how much is cos (theta) ?

Answer 6

ummm, -12/13

Answer 7

:)

Answer 8

you got it .

Answer 9

you are right @ejune420

Answer 10

thank you!

Answer 11

wc.