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tan15^(@) = …………...

`tan15^(@)` = …………

A

`(sqrt(3)-1)/(sqrt(3)+1)`

B

`(1-sqrt(3))/(1+sqrt(3))`

C

`(sqrt(3)+1)/(sqrt(3)-1)`

D

`(sqrt(3)+1)/(1-sqrt(3))`

Text Solution

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The correct Answer is:
A
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KUMAR PRAKASHAN-TRIGONOMETRIC FUNCTIONS -TEXTBOOK BASED MCQS
  1. The angles of a quadrilateral are in A.P. If the greates angle is 120^...

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  2. y=sin""(x)/(2),x in[0,2pi]. The function y is ………. In (0,pi).

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  3. tan15^(@) = …………

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  4. 2cos""(5pi)/(24).cos""(pi)/(24) = ……….

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  5. The value of (tan3x)/(tanx) do not lie between …………

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  6. tan75^(@)-cot75^(@)= ………..

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  7. cosec(-1410^(@))= ………….

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

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  9. Out of the following statement which is false?

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

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  11. cos105^(@)+sin105^(@) = …………

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

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

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

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

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

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

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

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

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

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