Use a Graph in a [ $$\left[ - 2 \pi , 2 \pi , \frac { \pi } { 2 } \right] \text { by } [ - 3,3,1 ]$$

question 176

Multiple Choice

Use a graph in a [ $$\left[ - 2 \pi , 2 \pi , \frac { \pi } { 2 } \right] \text { by } [ - 3,3,1 ]$$ 3, 3, 1] viewing rectangle to complete the identity.
- $$\frac { 2 \tan \frac { x } { 2 } } { 1 + \tan ^ { 2 } \frac { x } { 2 } } = ?$$

• A) \(\sin x\)
• B) \(\cos x\)
• C) \(\sin x + 1\)
• D) \(2 \cos x - 1\)

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