arccot的计算公式

侯咱待3228计算:arccot(√2加1),用弧度制表示
宦彭雷15385444776 ______ 你好:arccot(√2加1)=π/8因为:cot(π/8)=1+√2tan(3π/8)=cot(π/8)=1+√2

侯咱待3228arccot1等于什么 -
宦彭雷15385444776 ______ 兀/4

侯咱待3228arccot2等于多少度 -
宦彭雷15385444776 ______[答案] arccot 2 ≈ 26.565 °

侯咱待3228arccot 2.24= 只是多少? -
宦彭雷15385444776 ______[答案] arccot 2.24=90°-arctg 2.24=90°-66°=24°

侯咱待3228计算arccot (根号2 /2)+1/2(arcsin 2根号2 /3)
宦彭雷15385444776 ______ 设α=arccot (根号2 /2); β=arcsin 2根号2 /3; 则cosα=√3/3;sinα=√6/3; cosβ=1/3;sinβ=2√2/3; 设A=cosα+isinaα=√3/3+i√6/3; B=cosβ+isinβ=1/3+i2√2/3; A*A*B=cos(2α+β)+isin(2α+β) =(√3/3+i√6/3)*(√3/3+i√6/3)*(1/3+i2√2/3) =-1 故 A*√...

侯咱待3228arccot1/x - 1的极限怎么求 -
宦彭雷15385444776 ______ arccot1/x-1的极限怎么求 lim(x->1+)arccot1/x-1 =arccot(+∞) =0 lim(x->1-)arccot1/x-1 =arccot(-∞) =π

侯咱待3228求两条式子的值 arccot[cot( - 1/2)] -
宦彭雷15385444776 ______ 解:1. arccot[cot(-1/2)] =arccot[-cot(1/2)] =π-arccot[cot(1/2)] = π- 1/2 2. cos(2arctan5) 设arctan5=α ,则tanα=5, α∈(0,π/2) 则 cos(2arctan5) = cos2α =(1-tan²α) / (1+tan²α) 万能公式 = -24/26 = -12/13 现在高考都不考这儿了,还有人学这么深,感动!

侯咱待3228计算:arccot[171/140],用角度制求角度值
宦彭雷15385444776 ______ 用计算器计算arccot(171/140)≈39.30764 81161°

侯咱待3228反三角怎么算α=arccos(3/5) -
宦彭雷15385444776 ______ 等于53度的那个.因为反余弦的定义域是0到派