Math Chapter Wise question with answer

Q01 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 Q02 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 Q03 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 Q04 A line which makes angle 30°, 45°, 60° with the positive direction of x-axis and y-axis and z-axis respectively, th... English · TGT 2010 Q05 The acute angle between two lines, whose direction ratio are 2, 3, 6 and 1, 2, 2 is: English · UK SSSC LT 2020 Q06 If three line are drawn from O whose direction ratios are 1, 1,k, 2, 3,0 − − and 1,0,3 respectively, then they are... English · TGT 2005