Evaluate - sin 2 19 -sin 2 71 -

sin^219^∘+sin^271^∘ =sin^2(90^∘ 71^∘)+sin^271^∘ =cos^271^∘+sin^271^∘ =1 ...

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Complementary Trigonometric Ratios

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Question

Evaluate : ${sin}^{2} 19^{\circ} + {sin}^{2} 71^{\circ}$

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