RT
arctan 1 =?
反正切是反正切函數。
以來
棕褐色π/ 4 =棕褐色45º= 1
1的反正切等於1的反正切函數,等於π/ 4弧度或45度:
arctan 1 = tan -1 1 =π/ 4 rad =45º
Advertising