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If alpha is an acute angle and sinalpha ...

If `alpha` is an acute angle and `sinalpha = sqrt((x-1)/(2x))`, then what is tan a equal to ?

A

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

B

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

C

`sqrt(x^(2)-1)`

D

`sqrt(x^(2)+1)`

Text Solution

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The correct Answer is:
A
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LUCENT PUBLICATION-TRIGONOMETRIC RATIO OF SPECIFIC ANGLES-Exercise 10A
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  2. ABC is a right triangle with right angle at A. If the value of tan B =...

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  3. If alpha is an acute angle and sinalpha = sqrt((x-1)/(2x)), then what ...

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  4. If theta is in first quadrant and costhetage(1)/(2) then which one of ...

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  5. What is the value of cos1^(@) cos2^(@)cos3^(@).....cos270^(@) ?

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  6. IF A=pi//6 and B=pi//3 then which of the following is/are correct? 1...

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  7. If sin17^(@)=(a)/(b) then value of sec17^(@)-sin73^(@) is

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  8. Assume the Earth to be a sphere of radius R. What is the radius of the...

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  9. If (cosectheta+sintheta)/(cosectheta-sintheta)=(5)/(3) and 0^(@)ltthet...

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  10. Choose the correct statement :

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  11. Given below are respectively base and hypotenuse of four right angle t...

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  12. Consider the following statements about the expression sin^(3)theta+2s...

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  13. Consider right angled DeltaABC with /B=90^(@) . If /ACB=60^(@) , then ...

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  14. In DeltaABC, /ABC=60^(@) and AD is perpendicular from A to BC . If AB=...

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  15. If 0^(@)lethetale90^(@) then for any value of theta which one is corre...

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  16. If 0^@ lt theta lt 90^@, then the value of sin theta + cos theta is

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  17. If sin theta+cosec theta=2 then value of sin^(4)theta+cos^(4)theta ?

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  18. If sec theta = (13)/( 5) , then what is the value of (2 sin theta - ...

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  19. If 0^(@)lexle90^(@) and sinx+sqrt(3)cosx=1 , then what is the value of...

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  20. In a right angled DeltaABC if /B=90^(@),AC=2sqrt(5) and AB-BC=2 then w...

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