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In a A B C if b=2,c=sqrt(3) and /A=pi/6...

In a ` A B C` if `b=2,c=sqrt(3)` and `/_A=pi/6` , then value of `R` is equal to

A

`(1)/(2)`

B

`1`

C

`2`

D

`(1)/(4)`

Text Solution

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The correct Answer is:
B
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MOTION-SOLUTION OF TRIANGLE-EXERCISE -1
  1. If, in a triangleABC, (a+b+c)(b+c-a)=kbc, then k lies in the interval

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  2. In any DeltaABC, 2 (bc cos A + ca cos B + ab cos C) =

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  3. In a A B C if b=2,c=sqrt(3) and /A=pi/6 , then value of R is equal to

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  4. The distance between the middle point of BC and the foot of the perpen...

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  5. In DeltaABC, if AB=5cm, BC=13cm and CA=12cm, then the distance to vert...

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  6. In triangle ABC , prove that (b+c)cos A +(c+a)cos B +(a+b)cos C=a+b+c.

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  7. (b-c)/acos^2 (A/2)+(c-a)/bcos^2(B/2)+(a-b)/c cos^2(C/2)=

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  8. Prove that bc cos^(2).(A)/(2) + ca cos^(2).(B)/(2) + ab cos^(2).(C)/(2...

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  9. In a triangleABC, [tan(A/2) tan(C/2)] is equal to

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  10. In A B C , the median A D divides /B A C such that /B A D :/C A D=2:1...

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  11. If the median AD of triangle ABC makes an angle pi/4 with the side BC,...

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  12. In a DeltaABC, A=(2pi)/3, b-c=3sqrt3 cm and area(DeltaABC)=(9sqrt3)/2 ...

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  13. If the area of triangleABC is triangle =a^(2) -(b-c)^(2), then: tanA =

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  14. If the sides of a triangles are 3:7:8, then ratio R:r

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  15. In a right angled triangle R is equal to

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  16. In a triangle a = 13 , b = 14, c = 15, r =

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  17. In an equilateral triangle, the inradius and the circumradius are conn...

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  18. In a triangle ABC, right angled at B, then

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  19. If the area of triangles is 100 sq. cm, r1= 10 cm and r2= 50 cm, then...

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  20. In a triangleABC, the inradius and three exradii are r,r1,r2" and "r3 ...

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