Math Chapter Wise question with answer

Q01 If 1 1 1,m,n l and 2 2 2,m,n l are direction cosines of the two lines inclined to each other at an angle θ, then th... English · Rajasthan TGT 2013 Q02 If (l1, m1, n1), (l 2, m2, n2) are direction cosines of two lines and θ is the angle between them, then cosθ= English · Jharkhand TGT 2017 Q03 The angle between the lines whose direction cosines satisfy the equations l + m + n = 0 and 2lm + 2nl – mn = 0 is – English · UP PGT 2021 UPPCS (Pre) 2002 Q04 A line lying in the yz - plane is inclined at an angle α with z - axis. Its direction cosines are- English · UPPSC GIC 2021 UPPSC Ashram Paddhati 2021 Q05 The direction cosines of the line which is perpendicular to the lines with direction ratios 1,–2, –2 and 0, 2, 1 ar... English · UKPSC Lecturer (Mains) 2020 Q06 The angle between the lines whose direction cosines are given by the equation 3 ℓ + m + 5n = 0 and 6mn –2n ℓ + 5 ℓ... English · UKPSC GIC 2018