(sin 3x/sin x)+(cos 3x/cos x)=4cos 2x
Saluranedukasion 2024-01-24T22:12:00.000Z
(sin 3x/sin x)+(cos 3x/cos x)=4cos 2x
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(sin 3x/sin x)+(cos 3x/cos x)=4cos 2x