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Find the value of 16cos(pi/15).cos((2pi)...

Find the value of `16cos(pi/15).cos((2pi)/15).cos((4pi)/15).cos((8pi)/15)`

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UNITED BOOK HOUSE-ANNUAL EXAMINATION QUESTION PAPERS 2016-EXERCISE
  1. Two variables x and y are related by y=10-3x.If the standard deviation...

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  2. For any three sets A,B and C prove that Acup(BcapC)=(AcupB)cap(AcupC)

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  3. Find the value of 16cos(pi/15).cos((2pi)/15).cos((4pi)/15).cos((8pi)/1...

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  4. Show that sin^3alpha+sin^3(120^@+alpha)+sin^3(240^@+alpha)=-3/4sin3alp...

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  7. Find the probability of drawing 4 cards from a pack of 52 cards such t...

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  8. Find the sum of n-terms of the following series:(x+1/x)^2+(x^2+1/x^2)^...

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