AM-2461

Double angle formulae

A Math · Secondary 4 · Hard · Double angle formulae

1. $\dfrac{5\sqrt{3}}{2}\,\text{m s}^{-2}$
2. $\dfrac{5}{2}\,\text{m s}^{-2}$
3. $\dfrac{5\sqrt{3}}{4}\,\text{m s}^{-2}$
4. $5\,\text{m s}^{-2}$

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