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If in a triangle PQR , sin P, sin Q, sin...

If in a triangle PQR , sin P, sin Q, sin R are in A.P., then

A

the altitude are in A.P

B

the altitudes are in H.P

C

the altitudes are in G.P

D

the medians are in A.P

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The correct Answer is:
B
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AAKASH SERIES-PROPERTIES OF TRIANGLES-LECTURE SHEET EXERCISE - III (Straight Objective Type Question)
  1. In DeltaABC=(b-c)/(r(1))+(c-a)/(r(2))+(a-b)/(r(3))=

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  2. If r(1)^(2)=r1r(2)+r(2)r(3)+r(3)r(1) then the triangle is

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  3. If in a triangle PQR , sin P, sin Q, sin R are in A.P., then

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  4. In a traingle ABC,. (r(1)-r)/(a)+(r(2)-r)/(b)+(r(3)-r)/(c)=

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  5. Statement-I In a DeltaABC if a lt b lt c and tau is inradius and r(...

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  6. If R+r=r(3) then C=

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  7. In a DeltaABC if r1=8,r2=12,r3=24 find a,b,c.

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  8. If the angle of tangents from vertices to Incircle are H.P then r(1),r...

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  9. In Delta ABC , if (1- (r1)/(r2)) (1- ( r1)/( r3)) = 2, then the tria...

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  10. In a triangle ABC let angle C=pi//2. If r is the inradius and R is the...

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  11. Statement-I : If side BC and radiu of r(2)a nd r(3) of an acute angled...

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

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  13. If Delta is the area of a triangle with side lengths a , b , and c , ...

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  14. A circle is inscribed in an equilateral triangle of side a, The area o...

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  15. 3 - Circles with radii a, b, c touch one another externally tangents a...

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  16. Delta^("le") ABC is equilateral triangle of side a.P lies on BA such t...

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  17. A triangle has sides 6,7 and 8. The line through its incentre parallel...

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  18. If p(1), p(2), p(3) are respectively the perpendiculars from the verti...

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  19. If P(1),P(2),P(3) are altitudes of a DeltaABC then show that (1)/...

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  20. If p(1), p(2), p(3) are respectively the perpendiculars from the verti...

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