Question

Find the value of cos θ for the angle shown

Answer 1

do you know the ratio for tangent?

Answer 2

i mean cosine

Answer 3

adj / hyp?

Answer 4

ok. so you know what the adj and opp are. so you can use pythagoreans to get the hypotenuse then you have your ratio.

Answer 5

or
in this case think of it in terms of x y and r

Answer 6

cos is x/r

Answer 7

7/4?

Answer 8

4/7?*

Answer 9

no its 4/7

Answer 10

there you go.