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19 October, 05:43

In a 2 dimensional Cartesian system, the x-component of a vector is known, and the angle between vector and x-axis is known. Which operation is used to calculate the magnitude of the vector? (taken with respect to the x-component)

a. dividing by cosine

b. dividing by sine

c. multiplying by cosine

d. multiplying by sine

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Answers (1)
  1. 19 October, 07:23
    0
    The correct answer is a

    Explanation:

    The cosine function is

    cos θ = ca / H

    done ca is the adjacent leg (x-axis) and H is the hypotenuse (vector module)

    we clear

    H = ca / cos θ

    therefore, to find the magnitude of the vector, the cathete is divided into the cosine.

    The correct answer is a
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