Evaluate the Expression Using the Concept of a Reference Angle $\sin \left( - 150 ^ { \circ } \right)$

question 19

Multiple Choice

Evaluate the expression using the concept of a reference angle. $\sin \left( - 150 ^ { \circ } \right)$

• A) \(\frac { \sqrt { 6 } } { 6 }\)
• B) \(\frac { \sqrt { 6 } } { 2 }\)
• C) \(\frac { 1 } { 2 }\)
• D) \(- \frac { 1 } { 2 }\)
• E) \(- \frac { 1 } { 6 }\)

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