余切

餘切

yúqiē

noun

Meanings

1 cotangent (trigonometric function)
2 cot

Characters

complementary; remaining

tangent; to cut

Examples

HSK 7-9

正弦、余弦、正切、余切都是三角函数。

Zhèngxián, yúxián, zhèngqiē, yúqiē dōu shì sānjiǎo hánshù.

Sine, cosine, tangent and cotangent are all trigonometric functions.

HSK 7-9

一个角的余切是它正切的倒数。

Yí ge jiǎo de yúqiē shì tā zhèngqiē de dàoshù.

The cotangent of an angle is the reciprocal of its tangent.

Tips

memory

余 'complement' marks the co- functions: 余弦 is cosine and 余切 cotangent, the tangent of the complementary angle, the one that makes it up to 90°. 切 is first tone, as in 正切.

Stroke Order

余 yú

切 qiē