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Determine the angles made by the vector V = (-36)i + (29)j with the positive x- and y-axes (enter the smallest possible positive values). Write the unit vector n in the direction of V.

Respuesta :

Answer:

Explanation:

[tex]\overrightarrow{V}=-36\widehat{i}+29\widehat{j}[/tex]

Let the given vector makes an angle θ from positive X axis

[tex]tan\theta =\frac{vertical component}{horizontal component}=\frac {29}{-36}[/tex]

tanθ = -0.8055

θ = -38.85° from + X axis, i.e. 321.15° from + X axis in counter clock wise direction

Angle made from + y axis = 321.15° - 90° = 231.15°

Magnitude of V = [tex]\sqrt{\left ( -36 \right )^{2}+\left ( 29 \right )^{2}=46.23[/tex]

The unit vector in the direction of V is given by

[tex]\widehat{n}=\frac {\overrightarrow{V}}{V}[/tex]

[tex]\widehat{n}=\frac{-36\widehat{i}+29\widehat{j}}{46.23}[/tex]

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