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In an equilateral triangle, inradius r ,...

In an equilateral triangle, inradius `r ,` circumradius `R` and ex-radius `r_1` are in A.P. (b) G.P. (c) H.P. (d) none of these

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  3. In an equilateral triangle, inradius r , circumradius R and ex-radius ...

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  4. In a triangle A B C ,(r1+r2)/(1+cosC) is equal to (2a b)/(c"Delta") (b...

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  5. With usual notations in a triangle A B C , if r1=2r2=2r3 then 4a=3b (b...

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  6. a, b, x are in A.P., a,b,y are in G.P. and a, b, z are in H.P. then:

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  7. In A B C , if r\ : r1: R=2\ : 12\ :5, where all symbols have their us...

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  11. The medians of a A B C are in 9c m ,\ 12 c m\ a n d\ 15 c m respectiv...

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  12. If ' O ' is the circum centre of the A B C and R1,\ R2,\ R3 are the r...

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  13. Two rays emanate from the point A and form an angle of 43 with one a...

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  14. In a A B C ,\ A=pi/3\ a n d\ b : c=2: 3. If tanalpha=(sqrt(3))/5,\ o<...

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  15. The value of (cosA)/(P1)+(cosB)/(P2)+(cosC)/(P3) is

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  16. Statement - I : The statement that circumradius and inradius of a t...

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  17. Prove that : 4\ R\ sin AsinB\ sin C=acosA+b\ cos B+c cosCdot

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  18. If p1,\ p2, p3 are the altitudes of a triangle from the vertices A , B...

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