how made overriding commission bill in tally

Tan^-1 a + cot^-1 (a+1)

The radius and height of a cone are in the ratio 4 : 3. The area of the base is 154cm2. Find the area of the curved surface.

Can u explain how to understand in these sums whn to tk tan c and when to tk sin c in the right angld triangle?? 

SAC code on interior design

in fig. 1.8.15, AB=AD,AC=AE&BC=DE . PROVE THAT BE=EC .

In this chapter Quadrilateral which theorem is important .. like which theorem can come in exam to prove ?

How to calculate  Point 'B'

1. 3x+y=2 9x+2y=7

Sir,

We are installing New Manufacturing Company.

We purchased Plant & Machinery in the year 2015-16 and in 2016-17, our production start from 20-09-2016.

can we claim depreciation and if yes from when.

In the following APs,find the missing terms in the boxes 5,( ), ( ), 9 1/2.

Sir , how to get to know that an equation can't be simplified further (plz rply in terms of the chapter sequence and series)