In the Problem, T Is a Real Number and P $\left( - \frac { \sqrt { 21 } } { 5 } , - \frac { 2 } { 5 } \right)$

question 176

Multiple Choice

In the problem, t is a real number and P = (x, y) is the point on the unit circle that corresponds to t. Find the exact value of
the indicated trigonometric function of t.
- $\left( - \frac { \sqrt { 21 } } { 5 } , - \frac { 2 } { 5 } \right)$ Find cot $\mathrm { t }$

• A) \(- \frac { \sqrt { 21 } } { 2 }\)
• B) \(\frac { \sqrt { 21 } } { 2 }\)
• C) \(- \frac { 2 \sqrt { 21 } } { 21 }\)
• D) \(\frac { \sqrt { 21 } } { 5 }\)

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