F.TF.C.9.a: Use trigonometric identities to rewrite expressions and as a tool when solving trigonometric equations.

Use trigonometric identities to rewrite expressions and as a tool when solving trigonometric equations.

Example Problems

Find

\lim_{x \to 0} \frac{\sin(x)}{\sin(2x)}

.

Find

\lim_{x \to 0} \frac{1 - \cos(4x)}{x^2}

Find

\lim_{x \to 0} \frac{\tan(3x)}{\tan(5x)}

.

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