Mark (√) against the correct answer in each of the following: If A(1, 2, -3) and B(-1, -2, 1) are the end points of a vector then the direction cosines of are

Question

Philoid · Accepted Answer

Given - A(1, 2, -3) and B(-1, -2, 1) are the end points of a vector

Tip – If P(a₁,b₁,c₁) and Q(a₂,b₂,c₂) be two points then the vector is represented by

Hence,

Formula to be used – The direction cosines of a vector is given by .

Hence, the direction cosines of the vector is given by

Mark (√) against the correct answer in each of the following:If A(1, 2, -3) and B(-1, -2, 1) are the end points of a vector then the direction cosines of are

Mark (√) against the correct answer in each of the following:
If A(1, 2, -3) and B(-1, -2, 1) are the end points of a vector then the direction cosines of are