Math, asked by karanparel745, 10 months ago

cos-1a+cos-1b+cos-1c=3π then a(b+c)+b(a+c)+c(a+b) is equal to

Answers

Answered by vishakha0987

1

Answer:

epic , historical Bhai Kuch samajh nhi aaya

Step-by-step explanation:

(・_・;)(*❛‿❛)

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