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The value of sin""(pi)/(14).sin""(3pi)/(...

The value of `sin""(pi)/(14).sin""(3pi)/(14).sin""(5pi)/(14).sin""(7pi)/(14).sin""(9pi)/(14).sin""(11pi)/(14).sin""(13pi)/(14)` is

A

a) `(1)/(8)`

B

b) `(1)/(16)`

C

c) `(1)/(32)`

D

d) `(1)/(64)`

Text Solution

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The correct Answer is:
D
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ADVANCED MATHS BY ABHINAY MATHS ENGLISH-TRIGONOMETRY -EXERCISES (Multiple Choice Questions)
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  2. cos^(2)alpha+cos^(2)(alpha+120^(@))+cos^(2)(alpha-120^(@))=?

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  3. The value of sin""(pi)/(14).sin""(3pi)/(14).sin""(5pi)/(14).sin""(7pi)...

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  8. In a DeltaABC,angleC=90^(@), then the equation whose roots are tan A &...

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  9. If sinA+sin2A=xandcosA+cos2A=y, then (x^(2)+y^(2))(x^(2)+y^(2)-3)=?

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  10. If cos2B=(cos(A+C))/(cos(A-C)), then tan A, tan B, tan C are in

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  11. (cos9^(@)+sin9^(@))/(cos9^(@)-sin9^(@))=?

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  12. If tanalpha=(1)/(7)&tanbeta=(1)/(3), then cos2alpha=?

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  13. If A=130^(@) and x=sinA+cosA, then

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  14. If tanA=(1)/(2),tanB=(1)/(3), then cos2A=?

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  15. If sin(120^(@)-A)=sin(120^(@)-B),0ltA,Bltpi, then the values A and B ...

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  16. Show that 2"sin"^(2)beta+4 cos(alpha+beta)"sin" alpha sin beta+cos2...

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  18. If A+C=B, then tan A tan B tan C = ?

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  19. tanthetasin((pi)/(2)+theta)cos((pi)/(2)-theta)=?

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  20. If x=cos10^(@)cos20^(@)cos40^(@), then x = ?

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