Two Planes are flying in a straight line towards a stranded campsite and are trying to parachute in some supplies. The furthest plane away from the campsite (at point A) spots the camp at an angle of depression of 28°. The second plane that is closer (at point B) spots the camp site at angle of depression of 35°. If the planes are 800 feet apart and the closer plane drops supplies that roughly follow the straight line from point B to point C, how far will the supplies travel in the air? (i. e. what is the length of the segment BC?)

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

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