Use the Fundamental Identities to Find the Value of the Trigonometric

question 127

Multiple Choice

Use the fundamental identities to find the value of the trigonometric function.
-Given that $\cos \left( \theta - \frac { \pi } { 2 } \right) = - \frac { 4 } { 5 }$ , find $\sin ( - \theta )$ .

• A) \(- \frac { 4 } { 5 }\)
• B) \(\frac { 4 } { 5 }\)
• C) \(\frac { 3 } { 5 }\)
• D) \(- \frac { 3 } { 5 }\)