Point P Is on the Terminal Side of θ $\mathrm { P } ( 5 , - 8 )$

question 320

Multiple Choice

Point P is on the terminal side of θ . Evaluate the six trigonometric functions for θ. If the function is undefined, write "undefined."
- $\mathrm { P } ( 5 , - 8 )$ ; find $\cos \theta$ .

• A) \(\frac { 5 \sqrt { 89 } } { 89 }\)
• B) \(- \frac { 5 } { 8 }\)
• C) \(\frac { 8 \sqrt { 89 } } { 89 }\)
• D) \(\frac { \sqrt { 89 } } { 5 }\)

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