Use the Fundamental Identities to Find the Value of the Trigonometric

question 108

Multiple Choice

Use the fundamental identities to find the value of the trigonometric function.
- $2 \cos ^ { 2 } 75 ^ { \circ } - 1$

• A) \(- \frac { \sqrt { 3 } } { 2 }\)
• B) \(- \frac { 1 } { 2 }\)
• C) \(\frac { \sqrt { 3 } } { 2 }\)
• D) \(\frac { 1 } { 2 }\)

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