![\frac{11}{12}](/tpl/images/1398/9134/c2e98.png)
Step-by-step explanation:
Use trigonometry (shown in image below) to find the 3 side-lengths:
The side opposite of θ =
![\sqrt{23}](/tpl/images/1398/9134/75993.png)
The base side adjacent to θ = 11The hypotenuse = 12
According to right triangle trigonometry:
cos θ = ![\frac{adjacent}{hypotenuse}](/tpl/images/1398/9134/f9b86.png)
Substitute in the values:
cos θ = ![\frac{11}{12}](/tpl/images/1398/9134/c2e98.png)
![Given sin
=
=
V23 and tan o
find cos 0.
23
11 )
12
?
COS 0 =
TO](/tpl/images/1398/9134/f9ae0.jpg)