Is 16: 14 ratios equivalent to 64: 60

No

Step-by-step explanation:

We are given that ratios 16:14 and 64:60

We have to find the given ratios are equivalent

We know that when two ratios a:band c:d are equivalent

Then

We have a=16 , b=14 ,c=64 and d=60

Product of 16 and 60=

Product of 14 and 64=

Hence, given ratios are not equivalent.

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°