it's a law sinAsiB+cosAcosB = Sin(A+B)
so the answer will be sin(17+27)= 0.695
so the answer will be sin(17+27)= 0.695
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sin17 cos 27 + cos 17 sin 27
.2923 * .8910 + .9563 * 4540
.2605+.4341= .69
.2923 * .8910 + .9563 * 4540
.2605+.4341= .69
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sin 44