Donavan is measuring the angles of a triangle. He measures the first two angles and gets 10 and 120. What should be the measure of the third angle

the third angle should equal 50 degrees.

Step-by-step explanation:

the angles of a triangle always add up to 180 degrees.

10+120=130

180-130=50

therefore, the last angle=50 degrees

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°

step-by-step explanation: