what restrictions must be placed on the variable in each of the following indentities? why?

a)

$$
\sin2x=\frac{2 an x}{1+ an^2x}
$$

b)

$$
\frac{1-\cos x}{\sin x}=\frac{\sin x}{1+\cos x}
$$

Question

what restrictions must be placed on the variable in each of the following indentities? why?

a)

$$
\sin2x=\frac{2	an x}{1+	an^2x}
$$

b)

$$
\frac{1-\cos x}{\sin x}=\frac{\sin x}{1+\cos x}
$$

Accepted Answer

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