Math Chapter Wise question with answer

Q01 Shortest distance between the pairs of straight lines () () () ˆ ˆ ˆ − − − r = 1 t i + t 2 j+ 3 2t k () () () ˆ ˆ ˆ... English · UKPSC GIC 2018 Q02 The value of for which the equation 2 2 2 x y z yz 0 represents a pair of planes is– English · UP PCS (Pre) 1995 Q03 The angle between the pair of planes 2 2 2 2x 6y 12z 18yz 2zx xy 0 is– English · UP PCS (Pre) 1996 GIC 2015 Q04 The three straight lines 3x + 4y + 6 = 0, 4x + 7y + 8 = 0, x + 3 2 y + 2 = 0 are- English · RPSC PGT 2022 Q05 If l1, m1, n1; l2, m2, n2 be the direction cosines of two perpendicular straight lines, then: English · PGT 2002 Q06 The shortest distance between the two straight lines– 4 6 3 x y z 3 5 2 2 3 4 and 5y 6 2z 3 3x 4 8 9 5 is– English · UP PCS (Pre) 1995, 1999