Applying the cosine ratio, the value of cos O as a fraction is: cos ) = 5/17
How to Apply the Cosine Ratio?
If given a right triangle, the cosine ratio that is used to find the fraction of the cosine of a reference angle is expressed as:
Cos ∅ = adjacent side length / hypotenuse length of the right angle.
Given triangle MNO, we have the following:
Reference angle (∅) = angle O
Adjacent side length = NO = 5 units
Hypotenuse length of the right angle= MO = 17 units
Plug in the values
Cos O = NO/MO
Cos O = 5/17
Therefore, applying the cosine ratio, the value of cos O as a fraction is: cos ) = 5/17
Learn more about the cosine ratio on:
https://brainly.com/question/15793827
#SPJ1
