The value of sin 60° cos 30° + sin 30° cos 60° is:
sin 60° = $\dfrac{\sqrt{3}}{2}$, sin 30° =$\dfrac{1}{2}$, cos 60° =$\dfrac{1}{2}$ and cos 30° = $\dfrac{\sqrt{3}}{2}$
Therefore,
($\dfrac{\sqrt{3}}{2}$) x ($\dfrac{\sqrt{3}}{2}$) + ($\dfrac{1}{2}$) x ($\dfrac{1}{2}$)
= ($\dfrac{3}{4}$) + ($\dfrac{1}{4}$)
= $\dfrac{4}{4}$
= 1
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