Question 739739
A triangular plot of farmland measures by 0.9 by 0.5 by 1.25 miles 
If the plot of the Land is fenced On the border What will be the Angles at which The fences of the three Sides meet ? 
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Use the Cosine Law
{{{c^2 = a^2 + b^2 - 2abcos(C)}}}