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IF the perimeter of a triangle is 12 tim...

IF the perimeter of a triangle is 12 times the arithmetic mean of the sides of its angles then its circumference=

A

`1`

B

`2`

C

` 3`

D

` 6`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE EXERCISE
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  2. If the angles of a triangles are 30 ^(@) , 45 ^(@) and the include...

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  3. IF the perimeter of a triangle is 12 times the arithmetic mean of the ...

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  4. In Delta ABC , if b=c = R then A =

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  5. IF the angles of a triangle are in the ratio 2:3:5, then the ratio of ...

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  6. If the angles of a triangles are in the ratio 1: 5: 6 then the ratio...

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  7. In Delta ABC , if a= 2, b= 3 , c=4 then cos A =

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  8. In DeltaABC , if a =4 , b = 5, c= 60 ^(@) , then C =

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  9. If in a triangle ABC, the altitudes from the A,B,C on opposite sides a...

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  10. If the angles of a triangle are in A.P., a=2 c= 4 , then b=

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  11. In Delta ABC on root of the equation x^(2) - 2bx cos A + b^(2) ...

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  12. In a triangle ABC, (a^2-b^2-c^2) tan A+ (a^2-b^2+c^2) tan B is equal t...

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  13. If the angles of a right angled triangles are in A.P. Then the side...

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  14. If sides of a triangles are in the ratio x: y : sqrt( x^(2) +xy + y...

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  15. If a:b: c = 3: 5: 7 then cos A : cos B : cos C

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  16. If A = 60 ^(@) " then " ( 1)/(a+b) + (1) /( a+ c) =

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  17. In Delta ABC if a =2, b= 3, c = 4 then cos A + cos B + cos C =

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  18. In Delta ABC , 2ac sin ""( 1)/(2) (A-B+C)=

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  19. The sides of a triangles are x^(2) +3x + 3, 2x+ 3 and x^(2) + 2x th...

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  20. In Delta ABC , if c^(4) - 2 (a^(2) + b^(2) ) c^(2) + a^(4) +a^(2)...

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