• anonymous
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???
Mathematics
• Stacey Warren - Expert brainly.com
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