Find the value of a and b when x = 10
a =
5x
5x2
2
b =
2x²(x - 5)
10x

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°

the battle of gettysburg is considered the "high water mark" of the confederacy because it marked the greatest advance of the confederate forces against the union.

just pick what you think i need more time let me know if this

step-by-step explanation: