00:05Question is, if p dot q is equal to p q, then angle between p vector and q vector is
00:17a 0
00:18degree, b 30 degree, c 45 degree, d 60 degree, is p vector dot q vector is equal to p
00:33q, this is given.
00:36So, we have to find angle between p vector and q vector, as we know that a dot b is
00:48equal to a b cos theta,
00:53so p dot q will also be equal to p q cos theta is equal to p into q. So,
01:04we have to find angle
01:05so cos theta will be equal to p q, here p q is multiplying on the other side of equal,
01:16it will
01:16divide. So, the table of p q on p q is one times, so cos theta will be equal to
01:27one, as we have to
01:30find angle, so theta will be equal to cos inverse one, as the value of cos inverse one is 0
01:41degree.
01:43So, the correct option will be a 0 degree, means the angle between p vector and q vector is 0
01:55degree.
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