The perimeter of a triangle is 60 feet. one leg is 12 feet long. of the two unnnown sides, one of them is twice as long as the other. find the length of the two unknown sides.

One side is 16. The other is 32.

Step-by-step explanation:

x + 2x + 12 = 60

3x + 12 = 60

3x = 48

x = 16

12 + 16 + 32 = 60

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°

60%