∠1 and​ ​∠2​ ​are complementary angles.

m∠1=52°

What is the measure of ​∠2​​?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet.what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet