أدخل x وy للحصول على r وθ.
أدخل r وθ للحصول على x وy.
نصيحة: إذا كانت θ بالراديان، بدّل وضع الزاوية أعلاه.
لنقطة (x, y)، نصف القطر القطبي هو r = √(x² + y²) والزاوية هي θ = atan2(y, x) . استخدام atan2 يضمن الربع الصحيح ويتعامل مع x = 0 بأمان.
deg = rad × (180/π),
rad = deg × (π/180) x = r·cos(θ),
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