iphone math Math function --> cos() and acos()

cos(): Find the cosine value

acos(): Inverse cosine value

Description:

• floatcos ( float$arg$arg )
•  float acos ( float $arg )

参数：arg )

float

• acosarg的余弦值 
• arg (

float

$arg

)

Parameters: 🎜arg code>🎜 Parameters to be processed 🎜Return value: 🎜🎜🎜The cosine value of <code>arg 🎜🎜The inverse cosine value of arg 🎜🎜 🎜 The above introduces the iphone math Math function--> cos() and acos(), including the content of iphone math. I hope it will be helpful to friends who are interested in PHP tutorials. 🎜 🎜 🎜