(i) direction ratios are:- (2, -6, 3)
So, the direction cosines are- (l, m, n), where,I2 + m2 + n2 = 1,
So, l, m, and n are:-
The direction cosines are:- \(\Big(\frac{2}{7},-\frac{6}{7}.\frac{3}{7}\Big)\)
(ii) direction ratios are:- (2, -1, -2)
So, the direction cosines are:- (l, m, n), where,I2 + m2 + n2 = 1,
So, l, m, and n are:-
The direction cosines are:- \(\Big(\frac{2}{3},-\frac{1}{3}.\frac{-2}{3}\Big)\)
(iii) direction ratios are:- (-9, 6, -2)
So, the direction cosines are- (l, m, n), where,I2 + m2 + n2 = 1,
So, l, m, and n are:-
The direction cosines are: \(\Big(\frac{-9}{11},-\frac{6}{11}.\frac{-2}{11}\Big)\)