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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Definitions:

Ordinary Annuity

A series of equal payments made at fixed intervals over a specified period.

Ordinary Annuities

A sequence of identical payments distributed at the conclusion of successive intervals during a predetermined duration.

Annuities Due

Annuities that require payment at the beginning of each period, as opposed to the end, used often in leases and loan repayments.

Time Periods

Distinct intervals of time used for financial analysis, planning, and accounting, can range from short-term to long-term durations.