Sin -10 - cos -10 equals

The correct option is D 1√(2) sin 18 cos 18 =√( 3 ) 1 2√( 2 ) #160; √( 3 ) +1 2√( 2 ) #160; = 2 2√( 2 ) #160; = 1 ...

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Circular Measurement of Angle

sin π10 - cos...

Question

$s i n \frac{π}{10} - c o s \frac{π}{10}$ equals

1

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\sqrt{2}

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0

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\frac{- 1}{\sqrt{2}}

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