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  1. 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°

  2. 2x²+3x+2-2fx=0

    Step-by-step explanation:

    solve for f by simplifying both sides of the equation, then isolate the variable.

    Plz mark brainliest!

    It's ok if u don't...lol

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