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The value of (cosA)/(P1)+(cosB)/(P2)+(co...

The value of `(cosA)/(P_1)+(cosB)/(P_2)+(cosC)/(P_3)` is

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ALLEN-SOLUTION AND PROPERTIES OF TRIANGLE-All Questions
  1. Two rays emanate from the point A and form an angle of 43 with one a...

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

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

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

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  11. In a DeltaABC, the median to the side BC is of length 1/sqrt(11-6sqrt...

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  12. Prove that : (r1)/(b c)+(r2)/(c a)+(r3)/(a b)=1/r-1/(2R)

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  13. Prove that : (tanA/2)/((a-b)(a-c))+(tanB/2)/((b-a)(b-c))+(tanC/2)/((c-...

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  14. Prove that in a triangle (b c)/(r1)+(c a)/(r2)+(a b)/(r3)=2R\ [(a/b+b...

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  17. Let a, b, c be the sides of a triangle & Delta its area. Prove that a^...

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  18. If in a triangle of base 'a', the ratio of the other two sides is r ( ...

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