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In a triangle ABC, if b+c/11=c+a/12=a+b/13 then prove that (cosA)/7=(cosB)/19=(cosC)/25.

In a triangle ABC, if b+c/11=c+a/12=a+b/13 then prove that (cosA)/7=(cosB)/19=(cosC)/25.

Grade:Upto college level

1 Answers

jitender lakhanpal
62 Points
10 years ago

hi sarath

PFA

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