You can apply the Pythagoras theorem to the triangle at the left hand side (the angles are 30, 60, and 90)

(43)^2 = a^2 (23)^2

a^2 = 48 12

a = 36

a = 6

Happy Xmas !!

This post is last updated on hrtanswers.com at Date : 1st of September – 2022