Question
Evaluate the following:
$\sin60^\circ\cos30^\circ+\cos60^\circ\sin30^\circ$
$\sin60^\circ\cos30^\circ+\cos60^\circ\sin30^\circ$
✓
Answer
On substituting the values of varios T-ratios, we get:
$\sin60^\circ\cos30^\circ+\cos60^\circ\sin30^\circ$
$=\Big(\frac{\sqrt{3}}{2}\times\frac{\sqrt{3}}{2}+\frac12\times\frac12\Big)$
$=\Big(\frac34+\frac14\Big)=\frac44=1$
$\sin60^\circ\cos30^\circ+\cos60^\circ\sin30^\circ$
$=\Big(\frac{\sqrt{3}}{2}\times\frac{\sqrt{3}}{2}+\frac12\times\frac12\Big)$
$=\Big(\frac34+\frac14\Big)=\frac44=1$
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