Word problems with trigonometry and triangles ex 2

The video tutorial explains how to solve a word problem involving a 40-foot extension ladder leaning against a building. The task is to find the height up the side of the building using the angle of elevation, which is 68 degrees. The instructor explains the concept of angle of elevation and how it relates to the horizontal. By forming a right triangle, the sine function is used to calculate the height, resulting in a height of approximately 37.09 feet.

What trigonometric function is used to relate the height of the ladder to the angle of elevation?

What is the calculated height of the ladder off the ground?