Question

In Triangle ABC, Cos B = (9/12) find Sin B.

Answer 1

SOHCAHTOA/Pythagorus

Answer 2

U know SOHCAHTOA?

Answer 3

cos = Adjacent/Hypotenuse
for finding the third side use pythagorus theorem
so,AC^2 =AB^2-BC^2
= 12^2-9^2
= 144-81
=63
AC = root 63
AC = 7.9

sinB = Opposite/hypotenuse
= 7.9/12

Answer 4

I'm still pretty unfamiliar with SOHCAHTOA.. I am trying to learn it though...

Answer 5

since cosB=9/12.sinB(opp side/hyp=root 63/12..

Answer 6

Oh, okay, thankyou guys,[;