Charlie is at a small airfield watching for the approach of a small plane with engine trouble. he sees the plane at an angle of elevation of 32. at the same time, the pilot radios charlie and reports the plane’s altitude is 1,700 feet. charlie’s eyes are 5.2 feet from the ground.   find the ground distance from charlie to the plane. show how you know

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

You’re giving a cube with a length of 2.5 cm and a width of 2.5 cm and a high of 2.5 cm you place it on a scale and it is 295 g calculate the density

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota