Revision Note - Math - Measures, Shape and Space - Trigonometry

1. Area $=\dfrac{1}{2}\times$ base $\times$ height
2. Area $=\

\begin{equation*}
a^2=b^2+c^2-2bc\cos A
\end{equation… Read

\begin{equation*}
\frac{a}{\sin A}=\frac{b}{\sin B}=\… Read

1. $\sin\theta = \dfrac{b}{c}$
2. $\cos\theta = \dfrac{a}{c}$

1. $r=\sqrt{x^2+y^2}$
2. $\sin\theta = \dfrac{y}{r}$
3. $\cos\t

1. $\sin^2\theta+\cos^2\theta =1$
2. $\tan\theta=\dfrac{\s

$$\begin{array}{c|c|c|c|c|c}
& 0^\circ & 30^… Read