Math, asked by roopalivelidandi, 7 months ago

[O
9.
In a AABC, a (cos²C +cos²B) +cos A(ccos C +b cos B) =

a) a
b) b
c) c
d) a +b+c

Answers

Answered by aditya9399506089

1

Answer:

answer is d=a+b+c is a (cos²C +cos²B) +cos A(ccos C +b cos

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