A cylinderical container of 32 cm height and 18 cm radius is filled with sand. Now all this sand is used to form a conical heap of sand. If the height of the conical heap is 24 cm, what is the radius of its base
If θ be positive acute angle and 5cosθ + 12sinθ = 13, then the value of cosθ is
In ΔABC, ∠B = 70°and ∠C = 60°. The internal bisectors of the two smallest angles of ΔABC meet at O. The angle so formed at O is
If a - b = 3 and a2 + b2 = 25, then the value of ab is
The simple interest on a sum for 5 years is two-fifth of the sum. The rate of interest per annum is
