trigonometry - Does the sine rule ever give you the obtuse angle

Why does the sine rule produce the acute angle, and will it ever produce the correct obtuse one? For example if you have a triangle ABC, where angle CAB is 27 degrees, CB is 7cm, and AB is 12cm. When

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trigonometry - Does the sine rule ever give you the obtuse angle

Answered: 1. (a) State the sine rule and prove it…