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Expand the Trigonometric Expression sin(x)cos(2x)

Use the double-angle identity to transform cos(2x) cos ( 2 x ) to 2cos2(x)−1 2 cos 2 ( x ) - 1 . sin(x)(2cos2(x)−1) sin ( x ) ( 2 cos 2 ( x ) - 1 ).Read more

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Sinx=cos2x Or, sinx=sin(90–2x) Or, x=90–2x Or, 3x=90 Or, x=30 Here , sin 30=1/2 and cos (2*30)=cos 60=Read more

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Expand the Trigonometric Expression sin(x)cos(2x)

Use the double-angle identity to transform cos(2x) cos ( 2 x ) to 2cos2(x)−1 2 cos 2 ( x ) - 1 . sin(x)(2cos2(x)−1) sin ( x ) ( 2 cos 2 ( x ) - 1 ).Read more

Tên miền: mathway.com Đọc thêm