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(aq²)² = a² + (aq)²
a²q⁴ = a² + a²q² |:a²
q⁴ - q² - 1 = 0
Δ = 1 + 4 = 5
q₁² = (1 + √5)/2
q₂² < 0
sinα = a/aq² = 1/q² = 2/(1 + √5) = 2(1 - √5)/(1 - 5) = (√5 - 1)/2
jak masz pytania to pisz na pw