Half Angle Tangent Substitution Practice Problems Online

If $\tan \frac{x}{2}=\frac{1}{4}$ , the value of $\cos x$ can be expressed as $\frac{a}{b}$ , where $a$ and $b$ are coprime positive integers. What is the value of $a+b$ ?

If $\tan \theta = t$ , which of the following is equal to $\tan 2 \theta$ ?

If $\tan \frac{x}{2}=-11$ , the value of $\tan x$ can be expressed as $\frac{a}{b}$ , where $a$ and $b$ are coprime positive integers. What is the value of $a+b$ ?

If $\tan \theta = t$ , which of the following is equal to $\cos 2 \theta$ ?

If $\tan x = 2$ , then $\sin 2x + \cos 2x + \tan 2x = -\frac{a}{b}$ , where $a$ and $b$ are coprime positive integers. What is the value of $a+b$ ?

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Half Angle Tangent Substitution

Sum and Difference Trigonometric Formulas

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Half Angle Tangent Substitution