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1.1 When can the sin-rule be applied to solve triangle?
\nIf two sides and an excluded angle are known
\nIf one sides and and two or more angles are known
\n1.2 When can the cos-rule be used to solve a triangle?
\nIf two sides and the included angle are known
\nIf all three sides are known
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\n1.2 When can the cos-rule be used to solve a triangle?
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