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If the sides and angles of a plane trian...

If the sides and angles of a plane triangle vary in such a way that its circumradius remains constant then that `(da)/cosA+(db)/cosB+(dc)/cosC=`

A

6 R

B

2 R

C

0

D

`2R(dA+dB+dC)`

Text Solution

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The correct Answer is:
C, D
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