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Ryaan
The dot product of two vectors is equal to zero then the angle b/w the vectors is? (a)0 (b)180 (c)90 (d) 160
90 degrees.....as cos90=0......eg: a.b=abcos(theta) where a and b are the magnitudes of a and b vectorsand theta is the angle between them. The dot product between 2 mutually perpendicular vectors is 0 as cos 90=0
then the angle b'w them is 90?
It must be equal to 90º
See here http://www.mathsisfun.com/algebra/vectors-dot-product.html