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The magnitude of vector

A

is 20.5 units and points in the direction 335° counterclockwise from the positive x-axis. Calculate the x- and y-components of this vector.

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- NCSLv 711 months ago
When the angle is given counterclockwise from the +x axis, the x-component is given by the cos function and the y-component is given by the y-function.

A_x = A*cos335º = 18.6

A_y = 20.5*sin335º = -8.66

Given A has been expressed with 3 significant digits, the components too should be expressed with 3 significant digits.

- oldschoolLv 711 months ago
x = 20.5*cos 335° = 18.58

y = 20.5*sin 335° = -8.66

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... should say "sin function," not "y-function."