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The valud of sin 12^(@) sin 48^(@) sin 5...

The valud of `sin 12^(@) sin 48^(@) sin 54^(@)` is equal to-

A

`1//2`

B

`1//4`

C

`1//6`

D

`1//8`

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The correct Answer is:
D
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MOTION-TRIGNOMETRIC RATIOS & IDENTITIES -Exercise 1
  1. If A+B=225^(@) then the value of (cotA)/(1+cotA).(cotB)/(1+cotB) is

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  2. The value of (sin 24^@ cos 6^@-sin 6^@sin 66^@)/(sin 21^@ cos 39^@-cos...

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  3. The valud of sin 12^(@) sin 48^(@) sin 54^(@) is equal to-

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  4. If A + B + C = (3pi)/2, then cos 2A + cos 2B + cos 2C is equal to (A) ...

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  5. The expression (cos 6x+6cos 4x+15 cos 2x+10)/(cos 5x+5 cos 3x+10 co...

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  6. The value of cos10^(@)-sin 10^(@) is

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  7. If 0 lt x lt pi and cos x + sin x = 1/2, then tan x is

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  8. If A lies in the third quadrant and 3 tan A-4 = 0, then 5 sin 2A + 3si...

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  9. For -pi/2 lt theta lt pi/2 ,(sin theta + sin 2 theta)/(1+cos theta + c...

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  10. Find the value of cos 12^(@)+cos 84^(@)+cos 156^(@)+cos 132^(@)

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  11. Prove that cos 36^(@) cos 72^(@) cos 108^(@) cos 144^(@)=1//16.

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  12. The value oif the expressin (1+cospi/10)(1+cos(3pi)/10)(1+cos(7pi)/10)...

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  13. (cos 20^(@)+8 sin 70^(@) sin 50^(@) sin 10^(@))/( sin^(2)80^(@)) is eq...

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  14. Which of the following is least ?

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  15. Find the value of x for which f(x)=sqrt(sinx-cosx) is defined, x in [0...

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  16. Find the number of solutions of sinx=x/(10)

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  17. Number of solution of equation sin x = x^2 + x + 1 is

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  18. Prove that the least positive value of x , satisfying tanx=x+1, lies i...

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  19. If a sin^(2) x +b lies in the interval [-2,8] for every x in R then...

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  20. Find the greatest value of c such that system of equation x^(2) + y^(...

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