Question

Background info: Two friends are trying to decide how long their ladder should be for the zip line they are building. There are two choices: 40ft or 25ft
i chose 40ft. the ladder is leaning against the tree at a 75 degree angle. i need to fill in the missing angles, but am stuck. pls help ;(

Answer 1

U can find the angle by adding 90 degrees and 75 degrees which equals 165 degrees. with this, you can do the equation 180-165 which equals 15. 15 is the answer for the missing degree. all angles in a triangle must equal 180 degrees when u add them together. for the angle on the right, same thing. 90+80 which equals to 170. so 10 is the degree for the angle on the right.