Question
Naina and Kalpana working together can do a piece of
work in 10 days, whereas Naina alone can do it in 12 days. In how many days can Kalpana do it alone?Solution
More Time and work Questions
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cot 13Ëš Â
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sin2 4˚ + sin2 6˚ + sin2 8˚ + sin2 10˚ + ……… + sin2 86˚ =?
Find the exact value of cos120°
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