The value of sin 2 30-cos 2 30- is -

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Standard Values of Trigonometric Ratios

The value of ...

Question

The value of sin² 30^o - cos² 30^o is :

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{cos}^{2} 30^{\circ} - {sin}^{2} 30^{\circ}

({sin}^{2} 30^{\circ} + {cos}^{2} 30^{\circ} + {cot}^{2} 45^{\circ})

Evaluate: $5 (\frac{{cos}^{2} 60^{\circ} + 4 {sec}^{2} 30^{\circ} - {tan}^{2} 45^{\circ}}{{sin}^{2} 30^{\circ} + {cos}^{2} 30^{\circ}})$ .

{cos}^{2} 30^{\circ} - {sin}^{2} 30^{\circ}

cos 60^{o}

\frac{1}{2}

\frac{5 {cos}^{2} 60^{\circ} + 4 {sec}^{2} 30^{\circ} - {tan}^{2} 45^{\circ}}{{sin}^{2} 30^{\circ} + {cos}^{2} 30^{\circ}}

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