Select all of the following expressions that require
use of the distributive property to simplify.
15(-√2)
√5647 (2)
(V5+ 2)(-7)
(3.5)(-7-2)

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 arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).