Question

Given the right triangle below, what is the value of cos B?
https://media.glynlyon.com/g_alg02_ccss_2013/11/img_alg2_10a_16_l1_ex1_triangle.gif
A. 12/15
B. 12/13
C. 5/12
D. 5/13

Answer 1

\[\cos \Theta =\frac{ Base }{ Hypotenuse }\]

Answer 2

5/12?

Answer 3

Wait no, 5/13?

Answer 4

for your figure

Answer 5

yup.. good work @marymoon
it's 5/13

Answer 6

you can also remember this

Answer 7

sin theta= perpendicular/ hypotenuse
cos theta= Base/Hypotenuse
tan theta= Perpendicular/Base

Answer 8

Thanks

Answer 9

you're welcome..:)