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

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

A

`(sqrt(2)+sqrt(3))/(4)`

B

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

C

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

D

`(sqrt(2)-sqrt(3))/(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
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KUMAR PRAKASHAN-TRIGONOMETRIC FUNCTIONS -TEXTBOOK BASED MCQS
  1. y=sin""(x)/(2),x in[0,2pi]. The function y is ………. In (0,pi).

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  2. tan15^(@) = …………

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  3. 2cos""(5pi)/(24).cos""(pi)/(24) = ……….

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

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  5. tan75^(@)-cot75^(@)= ………..

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  6. cosec(-1410^(@))= ………….

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

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  8. Out of the following statement which is false?

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

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  10. cos105^(@)+sin105^(@) = …………

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

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

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

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

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

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

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

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

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