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In Delta ABC tan "" ( A)/(2) = ( 5)/( 6...

In ` Delta ABC tan "" ( A)/(2) = ( 5)/( 6) , tan "" ( C )/(2) = (2)/(5) ` then a,b,c are such that

A

`b^(2)=ac`

B

`2b=a+c`

C

`2ac=b(a+c)`

D

`a+b=c`

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The correct Answer is:
B
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AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE SHEET (EXERCISE-II) (LEVEL-I)
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  3. If Delta =a^2-(b-c)^2, is the area of the triangle ABC, then tan A=

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  4. In Delta ABC tan "" ( A)/(2) = ( 5)/( 6) , tan "" ( C )/(2) = (2)/(5...

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  8. if (2)/(5)(y)/(z)+(2)/(5)(z)/(x)+(2)/(5)(x)/(y),(2)/(5)(x)/(y)+(2)/(5)...

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  12. If DeltaABC, if "cos"(A)/(2)= sqrt((b+c)/(2c)) then

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  13. In any Delta ABC,((a+b+c)(b+c-a)(c+a-b)(a+b-c))/(4b^2c^2)=

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  15. In Delta ABC, if sin^2 A+sin^2 B+sin^2 C =9//4, then the triangle is

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  18. In Delta ABC, if cos A cos B+ sin A sin B sin C=1, then the triangle i...

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  19. IF Delta ABC,if a tan A+b tan B=(a+b) tan ((A+B)/2), then the triangle...

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