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If a,b,c are in A.P. then tan ""( A)/(2...

If a,b,c are in A.P. then ` tan ""( A)/(2) tan "" ( C) /(2) = `

A

`1//4`

B

` 1//3`

C

` 3`

D

`4`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - 1
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  3. If a,b,c are in A.P. then tan ""( A)/(2) tan "" ( C) /(2) =

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  4. In Delta ABC tan "" ( A)/(2) = ( 5)/( 6) , tan "" ( C )/(2) = (2)/(5...

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  10. r ( cot "" ( B) /(2) + cot "" ( C) /(2)) =

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  11. In Delta ABC, if a,b,c are in A.P, then r1,r2,r3 are in

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  12. Prove that r+ r3 + r1 -r2= 4 R cos B

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  13. IF in a Delta ABC, r3=r1+r2+r, then angle A+ angle B=

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