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Question
Evaluate the following in the simplest form: sin 60º cos 45º + cos 60º sin 45º
Sum
Solution
sin 60º cos 45º + cos 60º sin 45º
`=\frac{\sqrt{3}}{2}\times \frac{1}{\sqrt{2}}+\frac{1}{2}\times\frac{1}{\sqrt{2}}`
`=\frac{\sqrt{3}}{2\sqrt{2}}+\frac{1}{2\sqrt{2}}=\frac{\sqrt{3}+1}{2\sqrt{2}}`
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