\(y'=-sin\left(3-5x\right).\left(3-5x\right)'=5sin\left(3-5x\right)\)
\(y'=-sin\left(sinx\right).\left(sinx\right)'=-cosx.sin\left(sinx\right)\)
\(y'=-\frac{1}{cos^22x}.\left(cos2x\right)'=\frac{2sin2x}{cos^22x}\)
\(y'=-\frac{1}{sin^2x}.\left(sinx\right)'=-\frac{cosx}{sin^2x}\)