Math, asked by deokateshiv, 3 months ago

In ∆ABC, a(b cos C - ccos B ) = ...​

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Answered by isfakulali
0

Answer:

  • In a AABC, a (cos²C +cos²B) +cos A(ccos C +b cos B) = a) a b) b c) c d) a +b+c
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