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`cot16^0cot44^0+cot44^0cot76^0-cot76^0cot16^0`= (a)`1`(b)` 2` (c)`3 `(d) ` 4`

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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
  1. In any triangle ABC, prove that sin^3Acos(B-C)+sin^3Bcos(C-A)+sin^3Cco...

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  2. Find the smallest positive root of the equation sqrt(sin(1-x))=sqrt(co...

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  3. cot16^0cot44^0+cot44^0cot76^0-cot76^0cot16^0= (a)1(b) 2 (c)3 (d) ...

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  8. Solve the equation 2sinx+cosy=2 for the value of xa n dydot

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  9. cos((2pi)/7)+cos((4pi)/7)+cos((6pi)/7)

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  10. Prove that sintheta+sin3theta+sin5theta+.....+sin(2n-1)theta=(sin^2nth...

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  15. In triangle ABC, prove that sin(B+C-A)+sin(C+A-B)+sin(A+B-C) =4sin A...

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  16. Prove that sum(k=1)^(n-1)(n-k)cos(2kpi)/n=-n/2, wherengeq3 is an int...

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  17. If (tan(ln6)dottan(ln2)dot"tan"(ln3))/(tan(ln6)-tan(ln2)-"tan"(ln3))=k...

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  18. In any triangle A B C ,sin^2A-sin^2B+sin^2C is always equal to (A) 2s...

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  19. If cot^2Acot^2B=3, then the value of (2-cos2A)(2-cos2B) is

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  20. If tanalpha=m/(m+1) and tanbeta=1/(2m+1) . Find the possible values o...

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