Question

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

Answer 1

C

`(30)/(\cos25)`

Step-by-step explanation:

Given the image of the right angle, to find PQ, we have to take the cosine of angle 25 degrees as shown below;

`\cos 25=(30)/(PQ)`

Let's go ahead and make PQ the subject of formula;

`\begin{gathered} PQ\cos 25=30 \\ PQ=(30)/(\cos25) \end{gathered}`