) Express the products into sums or differences 3 sin 13x sin 3x
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Answered by
0
Answer:
.What you mean.......
Answered by
1
Answer:
1.5sin 10x - 1.5sin 16x
Step-by-step explanation:
3 sin 13x sin 3x
= 3×0.5×2sin13x sin3x
= 1.5(sin(13-3)x - sin(13+3)x)
= 1.5sin 10x - 1.5sin 16x)
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