In Delta ABC, r+r2+r3-r1=...

In `Delta ABC, r+r_2+r_3-r_1=`

A

4R cos A

B

4R cos B

C

4R cos C

D

4R

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The correct Answer is:

A

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DIPTI PUBLICATION ( AP EAMET)-PROPERTIES OF TRIANGLES -EXERCISE 1B

In a triangle , if r1=2r2=3r3, then a/b+b/c+c/a=
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In Delta ABC, r+r2+r3-r1=
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IF in a Delta ABC, r3=r1+r2+r, then angle A+ angle B=
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In Delta ABC, (r3+r1)sqrt[[(rr2)/(r3r1)])=
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In /\ABC prove that (r1)/(bc) + (r2)/(ca) + (r3)/(ab) = 1/r - 1/(2R).
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In Delta ABC, (r1+r2) tan""C/2=
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