For all ∝i(i = 1, 2, 3, ....20) lying between 0° and 90°, it is given that, sin∝₁ + sin∝₂ + sin∝₃ + ......sin∝₂₀ = 20 . What is the value of (∝₁ +∝₂ +∝₃ + ....... +∝₂₀)?
please explaine this Q. sir