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If the sides of trinangles are x^(2) + ...

If the sides of trinangles are ` x^(2) + x+ 1,2 x + 1 , x^(-2) -1` where, x> 1, then the gratest angle is

A

` 145^(@) `

B

` 110 ^(@) `

C

` 120 ^(@) `

D

` 135 ^(@) `

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The correct Answer is:
C
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AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - II
  1. In Delta ABC , (a)/( cos A) = (b) /( cos B ) = ( c ) /( cos C ) , If ...

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  2. The base of a triangle is 80 and one of the base angles is 60^@. IF th...

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  3. If the sides of trinangles are x^(2) + x+ 1,2 x + 1 , x^(-2) -1 wher...

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  4. The sides of a triangle are sin alpha,cos alpha and sqrt(1+sin alpha c...

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  5. In Delta ABC if b+c:c+a:a+b=11:12:13, then cos A: cos B: cos C=

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  6. The smallest angle of the triangle whose sides are 6+sqrt12,sqrt48,sqr...

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  7. In DeltaABC, " if" (1)/(a+c)+(1)/(b+c)=(3)/(a+b+c) then show that C=...

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  8. If DeltaABC, ifangleC=(pi)/(3), "then"(3)/(a+b+c)-(1)/(a+c) equals

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  9. If C=60^(@), " then show that"(a)/(b+c)+(b)/(c+a)=1

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  10. If angles A,B,C are in A.P . , then 2cos (( A-C)/( 2))=

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  11. If C = 60 ^(@) " then "= ( b)/( c^(2) -a^(2)) + ( a) /( c^(2)- b^(2...

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  12. In an acute angled Delta ABC , if a^(4) + b^(4) +c^(4) = 2c^(2)...

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  13. In Delta ABC, if (2 cos A)/a+ (cos B)/b+ (2 cos C)/c=a/(bc)+b/(ca), th...

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  14. The straight roads intersect at angle of 60^@. A bus on one road is 2k...

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  15. The lengths of the two larger sides of a triangle are 10 and 9. If the...

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  16. In Delta ABC, if B=90^@ then tan""A/2=

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  17. In Delta ABC , if A = 3C " then " (a-c)/( 2c ) =

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  18. Two sides of a triangle are given by the roots of the equation x^2-5x+...

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  19. Two adjacent sides of cyclic quadrilateral are 2 and 5 and angle betwe...

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  20. In a triangle ABC, if B=30^@ and c=sqrt3b, then A can be equal to

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