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If twice the square of the diameter of t...

If twice the square of the diameter of the circle is equal to half the sum of the squares of the sides of incribed triangle ABC,then `sin^(2)A+sin^(2)B+sin^(2)C` is equal to

A

2

B

3

C

4

D

1

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MOTION-SOLUTION OF TRIANGLE-EXERCISE - 2 (LEVEL I)
  1. If twice the square of the diameter of the circle is equal to half the...

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  2. In a triangle ABC, if a=2,b=4,c=5 then cosB=

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  3. In a DeltaABC, a =1 and the perrimeter is six times the AM of the sinc...

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  4. In a triangle ABC ( a sin B + b sin A)/(sqrt(sin A sin B)) = 4, /C = (...

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  5. In a triangle ABC is (a)/(1)= (b)/(sqrt(3)) = (c )/(2), then

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  6. In a DeltaABC, If A=30^@,b=2,c=sqrt3+1, then (C-B)/2 is

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  7. cot (A+B)/2.tan(A-B)/2= (a) (a+b)/(a-b) (b) (a-b)/(a+b)

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  8. In any triangle ABC,1-tan(A/2)tan(B/2)=

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  9. In a triangleABC, if 3tan (A/2) tan (C /2)=1, then sides a,b,c are in

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  10. If, in Delta ABC, a = 16, b = 24, c = 20, then : sin (A/2)= ....

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  11. In triangleABC, (b+a-c)tan((A)/(2))=

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  12. If, in Delta ABC, a = 2x, b = 2y and C = 120^(@) then the area of the ...

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  13. If the median AD of triangle ABC divides the angle BAC in the ratio 1:...

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  14. In a triangle ABC , let angleC=(pi)/2. If r is the in-radius and R is ...

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  15. In an isosceles triangle with base angle alpha and lateral side 4, Rr=

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  16. If I is the incentre of a triangle whose is radius and circumradius ar...

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  17. AD, BE and CF are the medians of triangle ABC whose centroid is G. If ...

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  18. Let 'l' is the length of median from the vertex A to the side BC of a ...

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  19. If in a /\ ABC the altitude from the vertices A,B,C on opposite side a...

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  20. If the radius of the circum-circle of an isosceles triangle PQR is equ...

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