Question

K=?

Can you also explain so I can try it by my self with a similar one.

Answer 1

k = 10.39

Explanation:

tangent 30 = opposite side / adjacent side, opposite side = 9, adjacent side = k + 3sqrt3.

tan 30 = 9/(k + 3sqrt3)

0.5774 = 9/(k + 3sqrt3)

k + 3sqrt3 = 15.5885

k = 15.5885 - 3sqrt3

k = 10.392