Which of the following equations correctly represents the law of cosines? A. 2 = 22 + b2 – 2ab.cos(B) B. 2 = 22 + c2 – 2ac

Question

Which of the following equations correctly represents the law of cosines?

A. 2 = 22 + b2 – 2ab.cos(B)
B. 2 = 22 + c2 – 2ac.cos(C)
C. a2 = b2 + c2 – 2bc.cos(A)
D. b2 = 22 +62 – 2bc.cos(B)

in progress 0
Thanh Hà 5 years 2021-08-04T13:34:52+00:00 1 Answers 38 views 0

Answers ( )

  1. thugiang
    0
    2021-08-04T13:36:29+00:00
    Reply

    Answer:

    D. b2 = 22 + 62-2bc.cos(B)

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )