Question

Look at the figure.



If sin y°=and tan y°=, what is the value of cos y°?

Answer 1

sin(y) equals what?

Answer 2

your question is incomplete.
you haven't said what sin y and tan y are equal to?

Answer 3

tan(y) = sin(y)/cos(y)


cos(y)*tan(y) = sin(y)


cos(y) = sin(y)/tan(y)


Do you see where to go from here?

Answer 4

cos(y)*sin(y) = tan(y)

Answer 5

From here, plug in sin(y) = 9/c and tan(y) = 9/d and simplify


cos(y) = sin(y)/tan(y)


cos(y) = (9/c)/(9/d)


cos(y) = (9/c)*(d/9)


cos(y) = (9d)/(9c)


cos(y) = d/c

Answer 6

ooohh okay. thanks (:

Answer 7

you're welcome