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If in Delta ABC the sides a,b,c are in...

If in ` Delta ABC ` the sides a,b,c are in A.P. Then

A

` B gt 60 ^(@) `

B

` B = 60 ^(@) `

C

` B lt 60 ^(@) `

D

` B ge 60 ^(@) `

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The correct Answer is:
C
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AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - II
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  2. In Delta ABC, if tan A, tan B, tan C are in H.P., then a^2,b^2,c^2 are...

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  3. If in Delta ABC the sides a,b,c are in A.P. Then

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  4. If the altitudes of a triangle are in arithmetic progression, then the...

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  5. In Delta ABC if b=20,c=21 and sin A=3//5, then a=

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  6. In Delta ABC, if sin A: sin C=sin (A-B): sin (B-C), then a^2,b^2,c^2 a...

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  7. If cot ""^(A)/(2) : cot ""(B) /(2) : cot "" ( C )/(2) = 1: 4: 15 , ...

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  8. If sin A : sin B : sin C = 3: 4: 5 then tan ""(A)/(2) : tan ""(B)/(2...

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  9. In Delta ABC, if tanA: tan B: tan C=1:2:3, then sin A: sin B: sin C=

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  10. In Delta ABC if a: b: c = 7 : 8: 9 , then cos A : cos B : cos C =

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  11. Area of triangle ABC is a^(2) - (b-c)^(2) then tan A =

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  12. a^(2) cot A+ b^(2) cot B+ c ^(2) cot C =

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  13. In a triangle , if the larger side is 7 and one of the angle is 120 ^...

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  14. In Delta ABC, (cos A)/(c sin B)+(cos B)/( a sin C)+(cos C)/( b sin A)=

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

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  16. IF alpha,beta,gamma are the lengths of the altitudes of Delta ABC, the...

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  17. If alpha,beta,gamma, are lengths of the altitudes of a triangle ABC wi...

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  18. In Delta ABC, B = 45 ^(@) , C = 120 ^(@) , a= 40 cm, the length of ...

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  19. If the base angles of a triangle are 22 (1^(0) )/(2) , 112 (1^(0))/(2...

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  20. In Delta ABC, if 8R^(2) = a^(2) + b^(2) + c^(2), then the triangle is ...

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