Which of the following expressions can be used to find PQ?

Answer:
C
[tex]\frac{30}{\cos25}[/tex]Explanation:
Given the image of the right angle, to find PQ, we have to take the cosine of angle 25 degrees as shown below;
[tex]\cos 25=\frac{30}{PQ}[/tex]Let's go ahead and make PQ the subject of formula;
[tex]\begin{gathered} PQ\cos 25=30 \\ PQ=\frac{30}{\cos25} \end{gathered}[/tex]