Sin(4x)cos(6x)-cos4(x)sin(6x)=-0.45

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asked Jun 19, 2024 85.0k views

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Jirka Hanika · Answer 1 · 2024-06-22T23:46:31+0000

Above uses the addition formula so LHS is equal to sin(4x-6x) => sin(-2x) => -sin(2x). Since you didn’t give the range I’ll assume you can do the later part on your own but x = [arcsin(0.45)]/2. For pi/2 < x < 0

Sin(4x)cos(6x)-cos4(x)sin(6x)=-0.45

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