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If \(tan\theta = {a \over b}\), then \({a.sin\theta + b.cos\theta \over {a.sin\theta - b.cos\theta}}\) is:
If \({ sec^270° -cot^220°\over2{(cosec^259°-tan^231°)} }= {2 \over m}\)then m is equal to:
Person A can do one-fifth of the work in 3 days, while B's efficiency is half of that of A. In how many days A and B working together can do half of the work?
If the cost of x chairs is equal to the selling price of 16 chairs and the profit percentage is 12.5%. then what is the value of x?
A certain sum amounts to Rs. 13754 at 15% p.a. in \({2}{ 4 \over 15 }\)years, interest compounded yearly. The sum is: