Sine Rule

• The Sine Rule to work out a missing SIDE is:


  $\frac{a}{SinA}=$$\frac{b}{SinB}=$$\frac{c}{SinC}$
• The Sine Rule to work out a missing ANGLE is:


  $\frac{SinA}{a}=$$\frac{SinB}{b}=$$\frac{SinC}{c}$
• The Sine Rule is used when you have two sides and two angles.