If $\alpha, \beta\:and\:\gamma$ are the corresponding angles of the sides a, b and c are respectively in an oblique triangle, then according to law of cosine, the value of the square of the side is

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Sep 18, 2022

If $\alpha, \beta\:and\:\gamma$ are the corresponding angles of the sides a, b and c are respectively in an oblique triangle, then according to law of cosine, the value of the square of the side is

Difficulty: Easy

c^{2}=a^{2}+b^{2}-2ab\cos\alpha

c^{2}=a^{2}+b^{2}+2ab\cos\alpha

c^{2}=b^{2}+c^{2}+2bc\cos\alpha

c^{2}=b^{2}+c^{2}-2bc\cos\alpha

ID: 63273db9ca83163ac3a1197f