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If the angles A,B,C of a triangle are in...

If the angles A,B,C of a triangle are in A.P and sides a,b,c are in G.P then `a^2,b^2,c^2` are in

A

A.P

B

G.P

C

H.P

D

all the above

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The correct Answer is:
D
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AAKASH SERIES-REVISION EXERCISE-PROPERTIES OF TRIANGLES
  1. The distance of the orthocentre from the vertices A,B,C are in the rat...

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  2. If H is the orthocentre of DeltaABC and AH=x, BH=y, CH=z then (abc)/(x...

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  3. If the angles A,B,C of a triangle are in A.P and sides a,b,c are in G....

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  4. In triangle ABC, range of (a^(2)+b^(2)+c^(2))/(ab+bc+ca) is (a,b,c are...

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  5. In DeltaABC, if AD is the altitude and O is the orthocentre of DeltaAB...

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  6. If R is the circumradius of equilateral traingle DeltaABC then circumr...

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  7. If alpha, beta, gamma are lenghts of internal bisectors of angles A,B,...

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  8. In DeltaABC, a=2b,|A-B|=(pi)/(3) then angle C=

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  9. In Delta ABC , if x=tan((B-C)/(2))tan.(A)/(2),y=tan((C-A)/(2))tan.(B)/...

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  10. In a triangle ABC, D and E are the mid-points of BC, CA respectively. ...

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  11. The alternate vertices of a regular hexagon are joined to form another...

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  12. In DeltaABC if r(1)=2r(1)=3r(3) and D is the mid point of BC then cos ...

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  13. If (sin 3B)/(sinB)=((a^(2)-c^(2))/(2ac)) then a^(2),b^(2),c^(2) are in

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  14. In DeltaABC if r(1)=R then

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  15. IF Delta ABC,if a tan A+b tan B=(a+b) tan ((A+B)/2), then the triangle...

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  16. In triangle ABC, D is mid point of BC, if 'AD' is perpendicular to 'AC...

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  17. The sides of a right angled triangle are in A.P then they are in the r...

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  18. If the bisector angle A of the triangle ABC makes an angle theta with ...

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  19. In DeltaABC, AD is the altitude from A, if b gt c, C=23^(0), AD=(abc)/...

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  20. In DeltaABC, a=6,b=4 and cos (A-B)=4//5 then its area is

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