An observer on the top of a mountain, 500 m above the sea level, observes the angles of depression of the two boats in his same place vision to be 45 ° and 30 ° respectively. Then the distance between the boats, if the boats are on the same side of the mountain, is 

There are 2 teams - A and B. If 3 people are shifted from Team A to Team B, then Team B has thrice the number of members than Team A. If 2 people are shifted from Team B to Team A, then Team B has double the number of members than Team A. How many members does Team B have originally? 

If x = 2 then the value of $$ x^3 + 27x^2 + 243x + 631$$ is:

The base of an isosceles triangle is 6 cm and its perimeter is 16 cm. Its area is 

Ranjan made a profit of 25% when selling a TV set at Rs. 3000. If he now has to pay Rs. 500 more for the set, what should be his new selling price in order to make the same percentage of profit?

Each member of a club contributes as much rupees and as much praise as the number of members of the club. If the total contribution is ₹2525, then the number of members of the club is:

Find the inner surface area of all walls of a rectangular room with length 7 m breadth 5 m and height 3.5 m -  

Find the value tanθ-cosθ in the given figure.