Evaluate- sin2-10-sin22-5-sin23-5-sin29-10

Given, sin^2π10+sin^22π5+sin^23π5+sin^29π10 =sin^2π10+sin^22π5+sin^2(π 2π5)+sin^2(π π10) =sin^2π10+sin^22π5+sin^22π5+sin^2π10 since sin(π θ ...

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Principal Solution of Trigonometric Equation

Evaluate: si...

Question

Evaluate: $s i n^{2} \frac{π}{10} + s i n^{2} \frac{2 π}{5} + s i n^{2} \frac{3 π}{5} + s i n^{2} \frac{9 π}{10}$

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{sin}^{2} \frac{π}{10} + {sin}^{2} \frac{2 π}{5} + {sin}^{2} \frac{3 π}{5} + {sin}^{2} \frac{3 π}{5} + {sin}^{2} \frac{9 π}{10} = m

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