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In a DeltaABC, if r(1)=2r(2)=3r(3) then ...

In a `DeltaABC, if r_(1)=2r_(2)=3r_(3)` then a:b=

A

`(5)/(4)`

B

`(4)/(5)`

C

`(7)/(4)`

D

`(4)/(7)`

Text Solution

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AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE SHEET (EXERCISE-III) (LEVEL-II) (Straight Objective Type Questions)
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  4. In triangle ABC,(r(3)+r(1))sqrt([(rr(1))/(r(3)r(1))])=

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  6. Assertion (A) : The radius of the circle inscribed in the triangle obt...

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  8. Let h(a),h(b) be the lengths of altitude from A and B respectively. If...

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  10. In a triangle ABCk if 4 Rr "cos" (A)/(2)"cos"(B)/(2)"cos"(C)/(2)

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  11. In DeltaABC, 4R "sin"(A)/(2)"sin"(B)/(2)"sin"(C)/(2)=

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  12. ( a cos A + b cos B + c cos C )/( a +b +c ) =

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  13. r("cot"(A)/(2)"cot"(B)/(2)"cot"(C)/(2))=

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  14. In DeltaABC, if a=26, b=30 conc C=63//65 then r(1):r(2):r(3)=

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  15. In triangle ABC r=(R)/(6) and r(1)=7r. Then the mesaure of angle A=

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  16. In DeltaABC if C=90^(@), 1+sinA-sinB=

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  17. If 3R=4r, then cosA+cosB+cosC=

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  18. In triangle ABc, if A-B=120^(@) and R=8r where R r have their usual m...

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  19. In triangle ABC, base BC and area of triangle D are fixed. Locus of th...

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  20. If alpha,beta,gamma are the lengths of the altitudes of Delta ABC, the...

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