निम्न सदिशों `3hati+4hatj−7hatk` तथा `4hati+2hatj+6hatk` का अदिश गुणनफल ज्ञात कीजिए :

Find a unit vector in the diection of the vector. (i) (3hati + 4hatj - 5hatk) , (ii) (3hati - 2hatj + 6hatk) (iii) (hati + hatk) , (iv) (2hati + hatj + 2hatk)

If p_(1) and p_(2) are the lengths of perpendiculars from the points hati - hatj + 3hatk and 3hati + 4hatj + 3hatk to the plane barr *(5hati + 2hatj - 7hatk) + 8 = 0 , then

The vectors hati + 2 hatj + 3 hatk, lamda hati+ 4 hatj + 7 hatk,-3 hati - 2 hatj - 5 hatk are collinear if lamda is :

Which vector is to be added with 3hati+4hatj-5hatk and hati-2hatj+7hatk to give resultant as hati ?

Find the projection of hati+3hatj+7hatk on the vector 2hati-3hatj+6hatk

If the position vectors of P and Q are (hati+3hatj-7hatk) and (5hati-2hatj+4hatk) , then |PQ| is