Evaluate sin(A+B)sin(A−B)\sin(A+B)\sin(A-B)sin(A+B)sin(A−B) with A=60°A=60°A=60° and B=30°B=30°B=30°.
12\dfrac{1}{2}21
32\dfrac{\sqrt{3}}{2}23
111
34\dfrac{3}{4}43