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Mathematics
Luke Huerta
3 July, 03:15
Proof sin^3xcos^4x=sinx (cos^4x-cos^6x)
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Dallas
3 July, 05:35
0
Sin³ (x) cos⁴ (x) = sin (x) [cos⁴ (x) - cos⁶ (x) ]
sin (x) sin (x)
sin² (x) cos⁴ (x) = cos⁴ (x) - cos⁶ (x)
sin² (x) cos⁴ (x) = cos⁴ (x) [1] - cos⁴ (x) [cos² (x) ]
sin² (x) cos⁴ (x) = cos⁴ (x) [1 - cos² (x) }
cos⁴ (x) cos⁴ (x)
sin² (x) = 1 - cos² (x)
+ cos² (x) + cos² (x)
1 = 1
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