Sin(72°)=x÷20ft.
sin(72°)×20ft.= 19ft 252 inches
the ladder reach 19ft 252 inches tall on the building.
An equivalent statement will be if lines L and K intersect, then they are not parallel.
<h3>Parallel lines</h3>
Parallel lines are lines that do not meet. The angle between the parallel lines is 0 degrees
The statement if line L is parallel to line K, then they will never intersect is true and an equivalent statement will be if lines L and K intersect, then they are not parallel.
This is determined using the contrapositive statements
Learn more on parallel lines here: brainly.com/question/24607467
The next two patterns are 2,500 12,500
