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余弦
餘弦
yúxián
1. cosine (of angle), written cos θ

Character Breakdown

余
yú
surplus, remainder; surname
HSK 5 7 丶
弦
xián
bow string; string instrument; hypotenuse
HSK 6 8 丶

Compound Words (1)

双曲余弦
shuāngqūyúxián
hyperbolic cosine or cosh (math)

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