If sin(x) = 4/5,pi/2 < x < pi,find the value of sin(2x)
If sin(x) = 4/5,pi/2 < x < pi,find the value of sin(2x)
Find the value of sin 5pi/4
已知Sin(2x+pi/3)=1/3,求Sin(5Pi/6-4x),
已知函数f(x)=cos(2x-pi/3)+2sin(x-pi)*sin(x+pi/4)
sin(pi/2+x)=?
为什么|sin(2x+pi)|=|sin(2x)|呢?
Matlab u(x,t)=sin(5*pi*x)cos(5*pi*t)+2sin(7*pi*x)cos(7*pi*t)
y=sin(x+pi/3)sin(x+pi/2)的最小正周期是什么
given that x=(Sin(2/5))^(-1),find the exact value of 1.(Cosx
sin x + cos x = √2 * sin (x + Pi/4)
[sin(pi/2+x)-sinx]^2 +m
matlab中问题:x = A1 * sin(2 * pi * f1 * t) + A2 * sin(2 * pi *