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I need help proving this trigo equation starting/using the left hand side. 3 sin⁡θ - 4〖sin〗^3 θ=sin3θ Thanks in advance.?

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  • I need help proving this trigo equation starting/using the left hand side. 3 sin⁡θ - 4〖sin〗^3 θ=sin3θ Thanks in advance.?


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