Question

The value of sin² 30° - cos² 30° is

Answer 1

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0

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$\boxed{\text{sin 30° = [tex]\frac{1}{\sqrt{30}}$

$\boxed{\text{cos 30° = [tex]/frac{1}{/sqrt{30}}$

$Required: {sin}^{2} 30° - {cos}^{2} 30°$

$\boxed{\text{{sin}^{2}}}$

$\boxed{\text{{sin}^{2}\:30°\:-\:\frac{cos}^{2}\:30°}}$

$\boxed{\text{\frac{1}{\sqrt{2}}\:-\:\frac{1}{\sqrt{2}}}}[\tex]</p><p>[tex]\boxed{\text{\frac{1}{2}-\frac{1}{2}}}$

$\boxed{\text{0}}$

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