Complete the Identity $\frac { \cos ^ { 2 } x - \sin ^ { 2 } x } { 1 - \tan ^ { 2 } x } = ?$

question 45

Multiple Choice

Complete the identity.
- $\frac { \cos ^ { 2 } x - \sin ^ { 2 } x } { 1 - \tan ^ { 2 } x } = ?$

• A) \(\cos ^ { 2 } x\)
• B) \(\sin ^ { 2 } x\)
• C) 1
• D) \(- 1\)