Answer:
x ≈ 3.7 m
Step-by-step explanation:
Use the right triangle on the left to find the height h , using the sine ratio
sin39° = =
( multiply both sides by 7 )
7 × sin39° = h , then
h = 4.4
Using the tangent ration on the right side right triangle, then
tan50° = =
=
( multiply both sides by x )
x × tan50° = 4.4 ( divide both sides by tan50° )
x = ≈ 3.7 m ( to 1 dec. place )