Math — Sine & Cosine Rules
Solving non-right triangles and triangle area.
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\frac{a}{\sin A} = \frac{b}{\sin B} = \frac{c}{\sin C}
a^2 = b^2 + c^2 - 2bc\cos A
\text{Area} = \tfrac{1}{2}ab\sin C
s = \frac{a+b+c}{2}
Solving non-right triangles and triangle area.
\frac{a}{\sin A} = \frac{b}{\sin B} = \frac{c}{\sin C}
a^2 = b^2 + c^2 - 2bc\cos A
\text{Area} = \tfrac{1}{2}ab\sin C
s = \frac{a+b+c}{2}