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Math

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A ramp 10 feet in length rises to a loading Platform that is 4 feet off the ground. What is the angle of elevation of the ramp in degrees?

Do I use the law of cosines? When I do though I'm getting a little confused what to do.

  • Math -

    sine = opposite/hypotenuse

    sin (angle) = 0.4

  • Math -

    PERIMETER=2(L+B)
    =
    2(63+42)
    =210
    TOTAL COST=210*32
    =672

  • Math -

    .4 is not the right answer.

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