Question
This method is much easier. 
Apache soldier of enemy is flying along the curve given by Y is equal to X square + 7 a soldier placed at 37 want to shoot down the helicopter when it is in the nearest to him find the nearest distance
How can we say that A is an acute angle in question 2 of exercise 8.4??
How to find out what I have to take as base and height for other sums
Two circles tough externally. The sum of their areas is 130 pie sq cm and distance between their centres is 14 cm. Find the radii of the cirlcle