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In DeltaABC, A = (2pi)/(3), b -c = 3 sqr...

In `DeltaABC, A = (2pi)/(3), b -c = 3 sqrt3 cm and " area of " Delta ABC = (9sqrt3)/(2) cm^(2)`, then BC =

A

`6sqrt3`

B

9cm

C

18cm

D

12cm

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The correct Answer is:
B
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OBJECTIVE RD SHARMA ENGLISH-PROPERTIES OF TRIANGLES AND CIRCLES CONNECTED WITH THEM-Chapter Test
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  9. If in a triangleABC=(a)/(cos A)=(b)/(cos B), then

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  10. In a triangleABC, s/R=

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  11. If in a triangleABC, A=pi/3 and AD is the median, then

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  17. The perimeter of a triangle is 16 cm. One ofthe sides is of length 6 c...

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  18. In a triangleABC," if "(a)/(b^(2)-c^(2))+(c)/(b^(2)-a^(2))=0," then "a...

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  19. In a triangleABC, a^(2) sin 2C+c^(2) sin 2A=

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