Rs agarwal maths CBSE class 12 chapter 27 exercise 27 G
If (a1, b1, c1) and (a2, b2, c2) be the direction ratios of two parallel lines then
If a line makes angles α, β and γ with the x-axis, y-axis and z-axis respectively then (sin2 α + sin2 β + sin2 γ) = ?
The straight line
The angle between two lines having direction ratios 1, 1, 2 and 4 is
The Cartesian equations of a lines are What is its vector equation?
The vector equation of the x-axis is given by
Answer Vector equation need a fixed point and a parallel vector For x-axis fixed point can be anything ranging from negative to positive including origin And parallel vector is î Equation...