Jessie is building a ramp for loading motorcycles onto a trailer. The trailer is 3.2 feet off of the ground. To
avoid making it too difficult to push a motorcycle up the ramp, Jessie
decides to make the angle between the
ramp and the ground 17º. To the nearest hundredth of a foot, find the
length of the ramp.

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle