b is the correct answer u got it
I'm assuming you don't still need these? Sorry I didn't see this in time
23/4 i swear that’s the answer hope it helps
Use the 30-60-90 triangle.
Tan is opposite over adjacent.

Square roots cannot be on the bottom.

The bottom cancel out the square root bar.
Your answer is:

(It's best to memorize the 30-60-90 and the 45-45-90 triangles during trigonometry. It helps a lot.)
Hope this helps!
:)