A Sine/Cosine Identity
A Sine/Cosine Identity
This Demonstration looks at the trigonometric identity . We plot the functions (red curves), (orange curves), and compare the plots of the functions (black, on the left) and (black, on the right); when , they are the same.
sin(2θ)=2sin(θ)cos(θ)
sin(Ax)
cos(Bx)
2sin(Ax)cos(Bx)
sin((A+B)x)
A=B