# math

What is the length of the vector [5 cos è, 5 sinè]? If the vector [5,0] is rotated 36 degrees in the counter clockwise direction, what are the components of the resulting vector?

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1. What is the length of the vector [5 cos è, 5 sinè]?

5 I suspect although I do not know your notation

5 cos 36 i or 5 cos 36 in x direction
5 sin 36 j or 5 sin 36 in y direction

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