Opposite pairs and the sine rule
Opposite pairs and the sine rule
The sine rule is for non-right-angled triangles, so you do not need a 90∘90^\circ90∘ angle. The key skill is spotting opposite pairs: an angle and the side directly across from it.
Opposite pairs and the sine rule
Opposite pairs and the sine rule
The sine rule is for non-right-angled triangles, so you do not need a 90∘90^\circ90∘ angle. The key skill is spotting opposite pairs: an angle and the side directly across from it.