2 3/5 ÷ 2/3
3 9/10
2 9/10
1 11/15
1 4/5

Solving the expression: we get

Option A is correct.

Step-by-step explanation:

We need to solve the expression:

We need to divide both the terms.

Solving:

First we will convert the mixed fraction into improper one

Now, we will convert division sign into multiplication, the term 2/3 is reciprocated

Now, multiply numerator with numerator and denominator with denominator

Now, we will convert into mixed fraction

So, Solving the expression: we get

Option A is correct.

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°