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Question Number 194304 by 281981 last updated on 02/Jul/23

Answered by cortano12 last updated on 03/Jul/23

$$\sin (\mathrm{A}+\mathrm{B})\cos (\mathrm{A}+\mathrm{B})\sin (\mathrm{A}-\mathrm{B})\cos (\mathrm{A}-\mathrm{B})=\frac{1}{2}$$$$\sin (2\mathrm{A}+2\mathrm{B})\sin (2\mathrm{A}-2\mathrm{B})=2$$$$\underbrace{\mathit{A}}$$

Commented by 281981 last updated on 03/Jul/23

$$oksir.tnq$$

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