Use the Fundamental Identities to Find the Value of the Trigonometric

question 246

Multiple Choice

Use the fundamental identities to find the value of the trigonometric function.
-Find $\cos \theta$ if $\sin \theta = - \frac { 5 } { 13 }$ and $\theta$ is in quadrant III.

• A) \(\frac { 12 } { 5 }\)
• B) \(- \frac { 12 } { 13 }\)
• C) \(- \frac { 13 } { 5 }\)
• D) \(- \frac { 5 } { 12 }\)

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