Hello Sir,
why we didn't take x = cosecø instead of secø?if we take x = cosec then we get tan~1(1/cotø).
a container opened from the top and made up of a metal sheet, is inthe form of a frustum of a cone of height 16 cm with radii of its lower and upper ends as 8 cm and 20 cm, respectively. find the cost of the milk, which can completely fill the container, at the rate of 20 per litre
The sum of first n terms of an ap whose first term is 8 and common difference is 20 is equal to the sum of first 2n terms of another so whose first term is -30 and common difference is 8.find n