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                   Q)Direction cosines of 2 lines are connected by the relation:-al+bm+cn=0 & fmn+gnl+hlm=0.Find the condition that these 2 lines will be (a)perpendicular (b)parellel

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What is polar and pole of a circle?
a given circle , reciprocation in a circle means the transformation of each point in the plane into its polar line and each line in the plane into its pole .
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How to find the point of contact of tangent on any parabola.
Solve the Equation of parabola and the tangent to get its point of contact. Thanks.
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Good morning Sir/Madam, I am stuck with this question from previous year papers of NTSE(SAT-Maths). Please help me in solving this... If 3 equal circles of radius 3 cm each touch each...
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We have n(n+1)(n+2)(n+3)+1 = (n 2 +3n)(n 2 +3n+2)+1 Let y = n 2 +3n Then, the given expression is y(y+2)+1 = y 2 +2y+1 = (y+1) 2 = (n 2 +3n+1) 2 . Hence, the square root is n 2 +3n+1 ....
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which is last date to enroll in rmo gujarat
Dear Student, Last date to send the filled form for Pre-RMO (RGS)-2015 is 25th September, 2015. For more details, please visit there official website. Thanks.
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