1/sin(10)-√3/sin(80)的值是最好把可以用上的公式写上.
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/26 16:44:04
xP;n@J]e:
X. Bnܤ VZK)b5 $4;3o}3&$OC"eY/'>[ejS/jΛtׅk1O9$2O4fQI:J8a$PN0"LGuD/*`:`^-r{
D`@_&(b`S?[5_`,fĐ8:ӦU-&n5X\Ҿ L:_hZ_h{h:Xק5
尽快 我今天将就要!化简(计算)1、Sin²10°+Sin²20°+Sin²30°+Sin²40°+Sin²50°+Sin²60°+Sin²70°+Sin²80°+Sin²90°2、√(Sin44°-Cos44°)²3、√ 1-2Sim50°Cos50°4、tan41°*tan42°*
1/sin(10)-√3/sin(80)的值是最好把可以用上的公式写上.
sin²1°+sin²2°+sin²3°+.+sin²89
sin
sin
求值:[cos 40°+sin 50°(1+√3tan 10°)]/[sin 70°√(1+sin 50°)].
sin0=0 sin(1/6π)=1/2sin(1/3π)=√3/2sin(1/2π)=1sin(2/3π)=√3/2sin(5/6π)=1/2sin(π)=0sin(-π)=0sin(-5/6π)=-1/2sin(-2/3π)=-√3/2sin(-1/2π)=-1sin(-1/3π)=-√3/2sin(-1/6π)=-1/2sin(7/6π)=-1/2sin(4/3π)=-√3/2sin(5/3π)=-√3/2sin(11/6π)=-1/
编写程序,求下面数列的前10项的和,结果保留2位小数.-sin(1!),sin(2!),-sin(3!),...,(-1)^n×sin(n!) (
计算:sin方10°+sin方20°+sin方30°+sin方40°+sin方50°+sin方60°+sin方70°+sin方80°+sin方90°=
问2道三角函数的题目1.已知α、β为锐角,且3(sin(α))^2+2(sin(β))^2=1,3sin(2α)-2sin(2β)=0,求证α+2β=π/22.8sin(α)+10cos(β)=5,8cos(α)+10sin(β)=5√3,求证sin(α+β)=-sin((π/3)+α)在下请教各位高手了,谢谢.
傅里叶级数作图f(x)=2sin[x] - sin[2x] + 2/3sin[3x] - 1/2sin[4x]我用mathematica输入程序Plot[{2sin[x],-2sin[x],2sin[x] - sin[2x],-2sin[x] + sin[2x],2sin[x] - sin[2x] + 2/3sin[3x],-2sin[x] + sin[2x] - 2/3sin[3x],2sin[x] - sin[2x] + 2/3si
求sin²10°+sin²20°+sin²40°+sin²50°+sin²70°+sin²80°
计算:sin²1°+sin²2°+sin²3°...+sin²45°+sin²46°...+sin²89°
计算:sin²1°+sin²2°+sin²3°+...+sin²87°+sin²88°+sin²89°
sin²1°+sin²2°+sin²3°+……+sin²87°+sin²88°+sin²89°=
sin²1°+sin²2°+sin²3°+...+sin²88°+sin²89°+sin²90°=等于多少?
matlab中一些新手问题,syms x y;y =ezplot('1/5*(-2-5/(-125+100*sin(x))*(-20*sin(x)+40+10*(-121*sin(x)^2-100*sin(x)+121+100*sin(x)^3)^(1/2))+5/2*sin(x)/(-125+100*sin(x))*(-20*sin(x)+40+10*(-121*sin(x)^2-100*sin(x)+121+100*sin(x)^3)^(1/2)))*cos(x)
高数 真诚求学 微积分 求左边的黎曼和 急2^(1/2)/10*((sin(4/2)+sin((4+0.05)/2)+sin((4+0.05*2)/2)+sin((4+0.05*3)/2)+sin((4+0.05*4)/2)+sin((4+0.05*5)/2)+sin((4+0.05*6)/2)+sin((4+0.05*7)/2)+sin((4+0.05*8)/2)+sin((4+0.05*9)/2)+sin((4+0.05*1