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If the sides of a triangles are in the ratio ` 2 : sqrt6 : sqrt3 + 1 ` then its angles are

A

` 45 ^(@) , 60 ^(@) , 75 ^(@) `

B

` 45 ^(@) , 60^(@) , 90 ^(@) `

C

` 45 ^(@) , 30 ^(@) , 90 ^(@)`

D

` 30 ^(@) , 45^(@) , 60 ^(@) `

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The correct Answer is:
A
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AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE EXERCISE
  1. In Delta ABC , side c= 2 sqrt2 and angle A= 30 ^(@) and if the ...

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  2. If the sum of the squares of the sides of a triangles ABC is equal ...

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  3. If the sides of a triangles are in the ratio 2 : sqrt6 : sqrt3 + 1 ...

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  4. If the angles of a triangles are 30 ^(@) , 45 ^(@) and the include...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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