Pleasssee will give 55 ! also will give first to answer brainliest, 5 star, and

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(anyone who answers just for points or copies will be warned and blocked)

the first one, all those points on the line just make a strait line.

47 - 90 = 43

43 - 180 = x

x = 137

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°

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative