magalyrodette9058 magalyrodette9058

Today at 9:33 AM
Mathematics

Answered

Write the expression in terms of sine only sin 9x cos 9x

Answer :

nikita83 nikita83

Today at 9:38 AM

[tex]\sin 2\alpha= 2\sin \alpha\cos\alpha\quad\Rightarrow\quad\sin 9x\cos 9x=\frac{1}{2}\sin 18x[/tex]

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