2sin s = cos s; whence,
4sin2 s = cos2 s = 1 - sin2s, and
5sin2 s = 1.
Therefore sin s = ±√0.2 = 0.4472, approx.
Check: cos2 s = 1 - 0.2 = 0.8, whence,
cos s = ±√0.8 = ±2√0.2 = 2 sin s.
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sin4x=(4sinxcosx)(1-2sin^2x)
3 sin(x) = 2sin(x) = 2/3x = 41.81 degreesx = 138.19 degrees
2sin(x+1)=3cos(x-1)Since there is only one variable in this equation, it cannot be implicitly differentiated.
2sin(x), or 5.4cos(y), tan(z)
R^2sin(theta)d(theta)d(phi)(r-hat)