The value of cos F to the simplest fraction is 4/5
Trigonometric ratio is the relationship between the sides of a right angled triangle.
Some of the trigonometric functions are sin, cos , tan e.t.c
In trigonometry, the value of cosθ is expressed as
cosθ = adj/hyp
In the diagram , the adjascent to angle F is line FG.
using Pythagorean theorem to find line FG
FG = √ 30² - 18²
= √576
= 24
cos F = 24/30
= 4/5
Therefore the value of cosF to the simplest term is 4/5.