Question

cosA-sinA+1/cosA+sinA-1=cosecA+cotA prove by rationalisation method

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Answer 1

Step-by-step explanation:

Let the salary before the increment be Rs.100. Then,

Increase in salary =Rs.10

∴ Increased salary =Rs.(100+10)=Rs.110

If increased salary is Rs. 110, original salary =Rs.100

If increased salary is Rs. 154000, original salary =Rs.(110100×154000)=Rs.140000

Hence, the salary of the man before increment was Rs.140000.