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cosec(-1410^(@))= …………....

`cosec(-1410^(@))=` ………….

A

`-2`

B

2

C

`(sqrt(3))/(2)`

D

`(2)/(sqrt(3))`

Text Solution

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The correct Answer is:
B
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KUMAR PRAKASHAN-TRIGONOMETRIC FUNCTIONS -TEXTBOOK BASED MCQS
  1. The value of (tan3x)/(tanx) do not lie between …………

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  2. tan75^(@)-cot75^(@)= ………..

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  3. cosec(-1410^(@))= ………….

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  4. sintheta=-(3)/(5)andpiltthetalt(3pi)/(2) then the value of (sectheta-c...

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  5. Out of the following statement which is false?

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  6. If tantheta+sintheta=mandtantheta-sintheta=n then m^(2)-n^(2) = …………

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  7. cos105^(@)+sin105^(@) = …………

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  8. If A+B=225^(@) then (cotA)/(1+cotA).(cotB)/(1+cotB) = ………….

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  9. If y=(1+tanA)(1-tanB)andA-B=(pi)/(4) then (y+1)^(y+1) = …………

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  10. sin^(2)((pi)/(8))+sin^(2)((3pi)/(8))+sin^(2)((5pi)/(8))+sin^(2)((7pi)/...

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  11. (cos(17^(@))+sin(17^(@)))/(cos(17^(@))-sin(17^(@)))= …………

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  12. (sin(70^(@))+cos(40^(@)))/(cos(70^(@))+sin(40^(@)))= ..........

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  13. sin(12^(@))sin(48^(@))sin(54^(@))= ………..

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  14. The value of (1-tan^(2)(15^(@)))/(1+tan^(2)(15^(@))) is ………..

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  15. The value of (1-tan^(2)15^(@))/(1+tan^(2)15^(@)) is

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  16. cos^(2)(7(1^@)/(2))-cos^(2)(37(1^(@))/(2))= …………

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  17. The value of cos(480^(@))sin(150^(@))+sin(600^(@))cos(390^(@)) is …………...

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  18. cos((2pi)/(7))+cos((4pi)/(7))+cos((6pi)/(7))=

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  19. If (tanx)/(1)=(tany)/(2)=(tanz)/(3)(ne0)andx+y+z=pi then which of the ...

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  20. cos((pi)/(7))cos((2pi)/(7))cos((4pi)/(7))= ………..

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