Q296
Identify the correct form of cos rule . . . . . . . .
A.
a2 = b2 + c2 + c2 + bc cosA
B.
a2 = b2 + c2 - 2bc cosB
C.
a2 = b2 + c2 - 2ab cosB
D.
a2 = b2 + c2 - 2bc cosA
AnswerAnswer: Option D
Solution
Answer: Option D
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