Trig Sine and Cosine Law
Am I correct? Please do not give answer but guide me. Thank you.
Ok, I have a triangle with A= 60 degrees and two sides which are b = 12 and c = 17
Ok, this to me is a Side Angle Side problem SAS, which requires the Cosine Law.
Ok to solve for \( a^2 \) we would use
\( a^2 = b^2+c^2 -2\times b \times c \times cos A \) which would be
\( a^2 = 12^2+17^2 -2\times 12 \times 17 \times cos 60 \) which will equal \( a = \sqrt{229}\)
Ok, I have more to come but is that correct so far???

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Splendid work so far!

You are on the correct path :)
Now we have to use Law of Sines to calculate the rest.

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