pankaj khanna

This page lists questions and answers that were posted by visitors named pankaj khanna.

Questions

The following questions were asked by visitors named pankaj khanna.

In triangle ABC , if angle c=90°,then prove that sin^2 A+sin^2 B=1.

If 1+sin^2 theta = 3sin theta cos theta, then prove that tan theta =1or 1/2

A person going at a rate of 5 km/hr in still water,takes thrice as much time in going 40km upstream as in going downstream. Find the speed of the stream.

If remainder on division x^3-kx^2+13x-21 by 2x-1 is -21 ,find quotient and k.Hence find zeroes of cubic polynomial x^3 -kx^2+13x-21.

If one zero of polynomial (a^2+a)x^2+13x+6a is reciprocal of other ,find a.

Answers

The following answers were posted by visitors named pankaj khanna.