The value of (sin30° + cos30°) – (sin60° + cos60°) is ________.

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Solution

$(\sin 30 ° + \cos 30 °) - (\sin 60 ° + \cos 60 °) = (\frac{1}{2} + \frac{\sqrt{3}}{2}) - (\frac{\sqrt{3}}{2} + \frac{1}{2}) = \frac{\sqrt{3} + 1}{2} - \frac{\sqrt{3} + 1}{2} = 0$

The value of (sin30° + cos30°) – (sin60° + cos60°) is _0_.

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