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Mazyrski [523]
3 years ago
10

Sin(11∘)cos(19∘)+cos(11∘)sin(19∘)

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
3 0
Recall that:

sin(A + B) = sinAcosB + cosAsinB

Therefore:

sin11°cos19° + cos11°sin19° = sin(11° + 19°)

                                                   = sin30° = 0.5            

I hope this explains it.
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