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What is tan 15^(@) equal to ?...

What is `tan 15^(@)` equal to ?

A

`2-sqrt3`

B

`2+sqrt3`

C

`1-sqrt3`

D

`1+sqrt3`

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The correct Answer is:
A
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PUNEET DOGRA-TRIGONOMETRY-PREV YEAR QUESTIONS
  1. If cos x = 1/3. Then, what is sinx. cotx. cosec x. tan x equal to?

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  2. The value of (cot54^(@))/(tan36^(@))+(tan20^(@))/(cot70^(@)) is

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  3. What is tan 15^(@) equal to ?

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  4. What is the value of tan 105^(@)?

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  5. If sin theta + 2cos theta = 1, then what is 2sin theta - cos theta equ...

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  6. What is (1-"tan"^(2)(x)/(2))/(1+"tan"^(2)(x)/(2))equal to :

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  7. The expression (cotx+cosecx-1)/(cotx-cosecx+1) is equal to:

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  8. What is the value of (sin^4alpha-cos^4 alpha+1)cosec^2 alpha.

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  9. If tanA=x+1andtanB=x-1, then x^(2)tan(A-B) has the value :

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  10. If A+B=90^(@), then what is sqrt(sinAsecB-sinAcosB)equal to ?

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  11. What is tan^(4)A-sec^(4)A+tan^(2)A +sec^(2)A equal to ?

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  12. If cosec theta + cot theta = c, then what is cos theta equal to?

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  13. If 4sin^2 theta=1 where 0 ltthetalt2pi,= how many values does thetat...

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  14. What is the value of Tan 15^@?

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  15. The line making an angle (-120^@) with x-axis is situated in the

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  16. Find the value of tan (-585^@) ?

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  17. If secalpha=(13)/(5) where 270^(@)ltalphalt360^(@) then what is sin al...

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  18. Consider the following statements I. The value of cos 46^@ -sin 46^@ i...

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  19. What is maximum value of sin^(2)x

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  20. What is the value of sin 18^@ cos 36^@?

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