Find the angle of elevation of the plane from point A on the ground. Step 1 The two sides we know are Opposite (300) and Adjacent (400). Step 2 SOHCAHTOA tells us we must use Tangent. read more
Remember -- the sum of the degree measures of angles in any triangle equals 180 degrees. Below is a picture of triangle ABC, where angle A = 60 degrees, angle B = 50 degrees and angle C = 70 degrees. If we add all three angles in any triangle we get 180 degrees. So, the measure of angle A + angle B + angle C = 180 degrees. read more
Such a triangle can be solved by using Angles of a Triangle to find the other angle, and The Law of Sines to find each of the other two sides. See Solving "AAS" Triangles. 3. read more