CBSE Guess > Papers > Question Papers > Class X > 2009 > Mathematics > Mathematics Q. 15. A ladder is placed against a wall such that its foot is at a distance of 2.5 m from the wall and its top reaches a window 6 m above the ground. Find the length of the ladder. 2 Sol. Let AC be the ladder
SECTION C Questions number 16 to 25 carry 3 marks each. Q. 16. Prove that is an irrational number. Sol. See Q. 16, 2009 (II Delhi). [Page 325 / 2007. Q. 17. Find all other zeroes of x4 + x3– 23x2 – 3x + 60, if it is given that two of its zeroes are and – . Sol. Since two zeroes are and – . (x – ) (x + ) = x2 – 3 is a factor of given polynomial.
CBSE 2009 Question Papers Class X |