Q 12. Evaluate.
Sol. 
Q. 13. Find the area of a triangle whose vertices are (3, 8), (– 4, 2) and (5, – 1).
Sol.
Q. 14. Triangle ABC is right-angled at B, and D is the mid-point of BC. Prove that AC2 = 4 AD2 – 3 AB2.
Sol: 
| Mathematics 2008 Question Papers Class X | |||||||
| Delhi | Outside Delhi | Compartment Delhi | Compartment Outside Delhi | ||||
 |
All Sets(PDF) | |
Set 1 | |
Set 1 | ||
|
Set 2 | |
Set 2 | ||||
|
Set 3 | |
Set 3 | ||||
