Falling Behind in Studies? Join Our Performance Improvement Batch. Enroll For Free
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
prove that the lines whose direction cosines are given by ul^2+vm^2 wn^2=0 and al+bm+cn=0 are (i) perpendicular if u(b^2+c^2)+v(C^2+a^2)+w(a^2+b^2)=0 (ii) parallel if a^2/u + b^2/v + c^2/w =0.
Dear student, u1 = [l1, m1, n1] is a unit vector along one line u2 = [l2, m2, n2] is a unit vector along the other line The cross product, u1 x u2 is perpendicular to both and is a unit vector. Its components are [m1n2 − m2n1, n1l2 − n2l1, l1m2 − l2m1]
Dear student,
u1 = [l1, m1, n1] is a unit vector along one line u2 = [l2, m2, n2] is a unit vector along the other line The cross product, u1 x u2 is perpendicular to both and is a unit vector. Its components are [m1n2 − m2n1, n1l2 − n2l1, l1m2 − l2m1]
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -