Here's the question you clicked on:
Lime
What is the value of w?
I have come to the conclusion that w is also 7√3 because of the 30,60,90 theorem.
so yeah, your right the triangle is a 30 60 90 triangle. now do you know what the theorem states?
Yes. I believe the pattern is to find the hypotenuse and the long leg.
so you can chek this website out: http://www.mathwarehouse.com/geometry/triangles/right-triangles/special-right-triangles.php see if it helps you?
then if you have anymore questions please post them?
we know from the sketch that Cos(30)=(7/root (3))/w then you can make w the subject of the formula . Done
Wait. \[Cos30 =7/\sqrt 3 / w = 14\]