what is the common ratio of a geometric progression were the first term is 3 and the 4th term is 648​

Step-by-step explanation:

Given

--- First, term

--- Fourth term

Required: Determine the common ratio

The nth term of a GP is

Substitute 4 for n

Substitute 648 and 3 for T4 and 3 respectively.

Take cube roots of both sides

The common ratio is 6

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°

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