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In a DeltaABC, AD is the altitude from A...

In a `DeltaABC, AD` is the altitude from A. Given `bgtc ,angleC=23^(@) and AD=(abc)/(b^(2)-c^(2))`, then `angle B=`....

A

`53^(@)`

B

`113^(@)`

C

`87^(@)`

D

none of these

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The correct Answer is:
B
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OBJECTIVE RD SHARMA-PROPERTIES OF TRIANGLES AND CIRCLES CONNECTED WITH THEM-Chapter Test
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  9. In a DeltaABC, A=(2pi)/3, b-c=3sqrt3 cm and area(DeltaABC)=(9sqrt3)/2 ...

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  10. In DeltaABC if a=(b-c)sectheta then (2sqrt(bc))/(b-c)sin(A/2)=

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  11. In a DeltaABC, (a + b + c) (b + c - a) = lambda bc. (where symbols ha...

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  12. If in DeltaABC, a=2b and A=3B, then A is equal to

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  13. Let the angles A , B and C of triangle A B C be in AdotPdot and let b ...

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  15. If in a triangleABC=(a)/(cos A)=(b)/(cos B), then

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  16. In a triangleABC, s/R=

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

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  18. If any triangleABC, the value of a(b^(2)+c^(2))cos A+b(c^(2)+a^(2))cos...

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  19. If the angle of a right angled triangle are in A.P. then the ratio of ...

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