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In Delta ABC, the correct formule amon...

In ` Delta ABC, ` the correct formule among the following are
Statement -I : ` r= 4 R sin ""(A)/(2) sin "" ( B) /(2) sin "" ( C) /(2) `
Statement -II : ` r_1= (s-a) tan "" ( A)/( 2) `
Statement-III ` : r_3 =(Delta ) /( s-c) `

A

Only I,II

B

Only II, III

C

Only I,III

D

I,II ,III

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - II
  1. In Delta ABC , r1r2 sqrt([( 4R -r1-r2)/( r1+r2)]) =

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  2. Prove that sum (r+r1) tan ((B-C)/( 2))=0

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  3. In Delta ABC, the correct formule among the following are Statemen...

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  4. In Delta ABC , with usual notation observe the two statements given ...

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  5. In Delta ABC Macth of following

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  6. Assertion (A) : The angle between equal sides of an isosceles triangle...

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  7. Assertion (A) : In Delta ABC a,b, c denotes lengths of the sides an...

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  8. Statement -I : In Delta ABC , b cos ^(2) "" ( C)/(2) + c cos ^(2) ""...

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  9. In a Delta ABC , ir r1 = 2r2 = 3r3 " then " (a)/(b) + ( b)/( c ) + (...

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  11. If in a Delta ABC , r1 =2r2=3r3, then b: c=

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  12. If cot ""(A)/(2) = 30 , Cot "" (B)/(2) = 50 , Cot "" ( C)/(2) = 70...

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