Who knows and can help me with this I’ll mark u as brainliest

C

Step-by-step explanation:

The rule for a function is every input has one output. In other words, one input (also known as a domain or x-value) cannot be pointing to two different outputs (also known as ranges or y-values).  Also, every output must have at least one input. The only option that adheres to these rules is C.

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°

you divide them and then you get the answer i took this class this year

step-by-step explanation: