noun
polar form
In mathematics, the representation of a complex number using its magnitude and angle.
複素数を極形式で表すと、掛け算が簡単になる。
Expressing complex numbers in polar form makes multiplication easier.
Compound of 極 (kyoku, 'pole; polar') and 形式 (keishiki, 'form'), a calque of the English mathematical term 'polar form'.