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The value of ( sin 12^@ xx cos 18^@ xx ...

The value of ( `sin 12^@ xx cos 18^@ xx sec 78^@ xx "cosec"72^@`) is ………….

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CALCUTTA BOOK HOUSE-SAMPLE QUESTIONS PAPERS-QUESTION
  1. The conjugate surd of (sqrt3 - 3) is ………..

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  2. Any cyclic parallelogram is a ………………. Figure.

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  3. The value of ( sin 12^@ xx cos 18^@ xx sec 78^@ xx "cosec"72^@) is ……...

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  4. If the numerical values of the volume and the curved surface area of a...

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  8. If the ratio of three sides of a triangle be 3:4:5, then the triangle ...

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  14. If one of the roots of the quadratic equation be x^2 - (1+b)x+6 = 0 be...

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  15. If a/2=b/3 =c/4 =(3a-ab+4c)/p, then find the value of p.

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  16. Simplify : sqrt2 - sqrt(18) + sqrt(27) - sqrt(32)

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