MathematicsMedium74×since 2004Q3775If the tangents on the ellipse 4x^2 + y² = 8 at the points (1, 2) and (a, b) are perpendicular to each other, then a² is equal to :A217{{2} \over {17}}172B6417{{64} \over {17}}1764C12817{{128} \over {17}}17128D417{{4} \over {17}}174Check answerSkip