2) Surveyers use a clinometer to measure degrees to help find lengths and distances. Do you think they are
more likely to use the law of sines, the law of cosines or... (it does exist) the law of tangents? Why?

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

you can use a^2+ b^2=c^2

emily solved for a part when she should have solved for the whole. 875,000 should be the numerator of the equivalent ratio. 70 x 12,500 is 875,000. so the answer is 100 x 12,500 which is 1,250,000.