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In a DeltaABC ,a cos^(2)B/2+bcos^(2)A/2 ...

In a `DeltaABC ,a cos^(2)B/2+bcos^(2)A/2` is equal to

A

s

B

2s

C

s/2

D

none of these

Text Solution

Verified by Experts

We have,
`acos^(2)B/2+bcos^(2)A/2`
`=axx((s(s-b))/(ac)+bxx(s(s-a))/(bc)=s/c(s-b+s-a)=s`
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OBJECTIVE RD SHARMA-PROPERTIES OF TRIANGLES AND CIRCLES CONNECTED WITH THEM-Section I - Solved Mcqs
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