Question

3sin6a / 5 cos3a если Sina 3 a = -0,1

Answer 1

$frac{3sin6alpha}{5cos3alpha}=frac{6sin3alphacos3alpha}{5cos3alpha}=frac65sin3alpha\sin3alpha=-0,1\frac56sin3alpha=frac56cdotleft(-frac1{10}right)=-frac5{60}=-frac1{12}$