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Class 9 ..ch.9 ....ex. 9.3...no. 6 
Can it also be done by not drawing any perpendicular lines?

 

 

On 1st  January ,2006 a ltd . Purchased a machine for 240000 and spent 10000 on ist ,erection .on ist July,2006 an additional machinery costing 100,000 was purchased .on ist july 2008 the machine purchased on ist January 2006 was,sold fo 143000 and on the,same date a new,machine w a s purchased at a cost of 200000 . Show the machine account for the fast three calender years after charging depreciation at 5%by the straight line method

Another method of this problem is

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Find the principal solution of the following: cosec X=-2 .

Evaluate cosec (-765°).

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How to solve 3x pulse 2y

Sin(90 A)

Sin (90 A)

I want to understand that how to find square root of any value with short trick.

Question ,3 exercise 7.4 in chapter 7 class 9

 

Question ,3 exercise 7.4 in chapter 7 class 9