At a hot air ballon festival, erica spots a red ballon due east at an angle of elevation of 36 degrees. she turns due west and sees a blue ballon at an angle of elevation of 51 degrees. if the altitude of the blue ballon is 296 meters, the altitude of the blue ballon is 461 meters, and erica is 1.6 meters tall, find the distance between the balloons.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.