Find the magnitude and direction of the displacement vector B from its component

Question

Find the magnitude and direction of the displacement vector B from its components. Compute the magnitude of B from the Pythagorean theorem. Calculate the direction of B using the inverse tangent, remembering to add 180degree to the answer in your calculator window, because the vector lies in the second quadrant. In part (a), note that cos (-theta) = cos theta; however, sin (-theta) = -sin theta. The negative sign of Ay reflects the fact that displacement in the y-direction is downward. What other functions, if any, can be used to find the angle in part (b)? (Select all that apply.) none of those listed

Explanation / Answer

Both A, D

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