3.1667
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Although your angle unit isn't stated, we assume you're talking radians, just because
your angle has a "pi" in it ... not much to go on, but hey! , we routinely do even more
with even less here at WikiAnswers.
Sin (19 pi / 6 radians) = -0.5
Sin (19 pi / 6 degrees) = 0.17276 (rounded)
1/2
Negative 0.5 is.
Sin(pi/6) = 1/2 is a true statement [not pie].
55 × sin 43 ÷ sin 23 ≈ 96
Do you mean Sin(pi/2) = 1 or [Sin(pi)] /2 = 0.0274....