Complete the Identity $\sin ^ { 2 } \frac { \theta } { 2 } = ?$

question 145

Multiple Choice

Complete the identity.
- $\sin ^ { 2 } \frac { \theta } { 2 } = ?$

• A) \(\frac { \sec \theta - 1 } { 2 \sec \theta }\)
• B) \(\frac { \sec \theta + 1 } { 2 \sec \theta }\)
• C) \(\frac { - \sec \theta - 1 } { 2 \sec \theta }\)
• D) \(\frac { - \sec \theta + 1 } { 2 \sec \theta }\)

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