Central Board of Secondary Education
Class – XII (Year 2009)
Subject – Mathematics - (Foreign)
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Use of Calculators is not permitted.
- Find the direction cosine of the line passing through the following
(-2, 4, -5) , (1, 2, 3)
- Show that the total surface area of a closed cuboid with square base and
given volume, is minimum, when it is a cube?