L/Q & L/(Q)power 1/2

A=[{:(l_(1),m_(1),n_(1)),(l_(2),m_(2),n_(2)),(l_(3),m_(3),n_(3)):}] and B=[{:(p_(1),q_(1),r_(1)),(p_(2),q_(2),r_(2)),(p_(3),q_(3),r_(3)):}] Where p_(i), q_(i),r_(i) are the co-factors of the elements l_(i), m_(i), n_(i) for i=1,2,3 . If (l_(1),m_(1),n_(1)),(l_(2),m_(2),n_(2)) and (l_(3),m_(3),n_(3)) are the direction cosines of three mutually perpendicular lines then (p_(1),q_(1), r_(1)),(p_(2),q_(2),r_(2)) and (p_(3),q_(),r_(3)) are

Three lines L_(1),L_(2),L_(3) are given by L_(1):vecr=lamdahati,L_(2):vecr=muhatj+hatk,L_(3):vecr=hati+hatj+gammahatk which of the following point Q can be taken on L_(2) so that the point P on line L_(1) point Q on L_(2) and point R on L_(2) are collinear

The chord of contact of tangents from a point P to a circle passes through Q. If l_(1) and l_(2) are the length of the tangents from P and Q to the circle,then PQ is equal to (l_(1)+l_(2))/(2) (b) (l_(1)-l_(2))/(2)sqrt(l_(1)^(2)+l_(2)^(2))(d)2sqrt(l_(1)^(2)+l_(2)^(2))

B and Q are brother. Q is son of L. L is brother of J. J is son of N. How is B related to N?

If the enthalpy of combustion of benzene (l), carbon (s) and hydrogen (g)are Q_(1) Q_(2)and Q_(3) respectively, what will be enthalpy of formation of Benzene?

Consider the line L given by the equation (x -3)/(2) = ( y-1)/( 1) = ( z -2)/(1). Let Q be the mirror image of the point (2,3 –1) with respect to L. Let a plane P be such that it passes through Q, and the line L is perpendicular to P. Then which of the following points is one the plane P?

In Figure, P Q R S is a parallelogram, P O\ a n d\ Q O are, respectively, the angle bisectors of /_P\ a n d\ /_Q . Line L O M is drawn parallel to P Q . Prove that: P L=Q M (ii) L O=O M

S.L. Loney (Ex-V Q 1-10)

S.L. Loney (Ex-14 Q 1-20)

S.L. Loney (Ex-14 Q 1-20)