2 vectors having equal magnitudes A make an angle Ф with each other, find the magnitude and directions of the resultant.
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let the vectors as a,b were a=b then R is resultant then R=√2a²+2a²cosФ or R=√2a²(1+cosФ).
rishabrahiman:
i required the next step of it.............the ans in the book was 2Acos theta/2........i didnt understand how????
cos(?) in book.....
yeh.. let (1+cosФ)=2cos²(Ф/2) then solve u will get.....
thanks
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Each quantity is characterized by both a magnitude and a ... information than does a scalar, and the multiplication of two vectors, ... angles to each other, and call them the x, y, and z axes. .... and pointing in the same direction are equal, so wesee that to help our ... a unit vector having a specified direction. This is ...
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