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Find the smallest angle of △BCD. Assume that s is a positive number.

Find the smallest angle of △BCD. Assume that s is a positive number.-example-1
User Xi Vix
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1 Answer

16 votes
16 votes

1) Let's assume "s" is equal to 1. As a positive number.

2) This way we can apply the Law of Cosines to find one leg


\begin{gathered} d^2=b^2+c^2-2bc\cos (118) \\ d=\sqrt[]{(45)^2+(48)^2-2\cdot(45)(48)\cdot\cos (118)} \\ d=79.73 \end{gathered}

Having the lengths of all legs, we can make use of the Law of the Sines


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User AbtPst
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