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Euler’s formula is one of those math ideas that feels almost too perfect to be real. It says that e to the power of i times x equals cos(x) plus i times sin(x). That might sound a bit technical, but what it really does is connect three very different parts of math—exponentials, imaginary numbers, and trigonometry—all in one clean equation. It shows up all over the place, from electrical engineering to quantum physics, and helps make sense of how waves and rotations work in the complex plane. One

Euler’s identity shows a deep connection between exponential functions and trigonometry. It states that raising the number e to an imaginary power gives a combination of cosine and sine. This elegant formula links algebra, geometry, and complex numbers, and is widely used in physics, engineering, and signal processing. تُظهر معادلة أويلر علاقة عميقة بين الدوال الأسية والدوال المثلثية. تنص على أن رفع العدد e إلى قوة تخيلية يعطي مزيجاً من جيب التمام وجيب الزاوية. تُعد هذه الصيغة الأنيقة رابطاً بين