## Category: Triangles

## In an equilateral triangle ABC, D is a point on side BC such that BD=1/3 BC P.T 9AD² = 7 AB²

## The aeroplane leaves an airport and flies due to north at a speed of 1000 km per hour. At the same time, another aeroplane leaves the same airport and flies due west at a speed of 1200 km per hour. how far apart will be the two planes after 1 ½ hours?

The aeroplane leaves an airport and flies due to north at a speed of 1000 km per hour. At the same time, another aeroplane leaves the same airport and flies due west at a speed of 1200 km per hour. Read More …