#could someone explain this question and go through the steps with reasons?

6 messages · Page 1 of 1 (latest)

hidden trailBOT
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orchid cairn
astral arch
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Draw the diagonal BD. Then, write the cosine theorem for triangles ABD and CDB for the angles opposite of BD. Then you'll see the connection between cos(C) and cos(A).

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Also good if you generalize the given angle and side.

orchid cairn
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I got it, ty