arc cos10/55等于多少度?急
人气:314 ℃ 时间:2020-09-12 08:02:47
解答
用计算器算得79.5243183°
弧度制:1.38796118980198787963234863872255847089020261433412128639062246580720\
0215428258241157377050709565719这是100位有效数字,如果需要更精确的再问.
如果用手算,用泰勒级数求近似:
arccos x = π - ( x + 1/2*x^3/3 + 1*3/(2*4)*x^5/5 + ...) (|x|
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