Choose the best answer. A 50-foot tree casts a shadow 75 feet long. The sine of the angle between the ground and the line that connects the tip of the shadow to the top of the tree is approximately _____.

We use tan ratio to solve this problem. Look into my attachment for better understanding.

tan x = the side in front of the angle/ the side adjacent to the angle
tan x = 50/75
tan x = 2/3
x = tan⁻¹(2/3)
x = 33,69

x is approximately 34°