Trigonometric Functions:
[tex]S\frac{O}{H} C\frac{A}{H} T\frac{O}{A}[/tex]
[tex]Sine\frac{Opposite}{Hypotenuse} Cos\frac{Adjacent}{Hypotenuse} Tan\frac{Opposite}{Adjacent}[/tex]
You have the angle and the adjacent. You need to find the hypotenuse (PR). Therefore, you use cos.
[tex]Cos(26)=\frac{13}{H}[/tex]
Rearrange the formula to find H (PR):
[tex]H = \frac{13}{Cos(26)}[/tex]
14.463 ~ 14.5
14.5°
