Find the Exact Value of the Expression Using the Provided $\cos ( s - t )$

question 154

Multiple Choice

Find the exact value of the expression using the provided information.
-Find $\cos ( s - t )$ given that $\cos s = - \frac { 3 } { 5 }$ , with $s$ in quadrant II, and $\cos t = \frac { 5 } { 13 }$ , with $t$ in quadrant IV.

• A) \(\frac { 63 } { 65 }\)
• B) \(- \frac { 33 } { 65 }\)
• C) \(\frac { 33 } { 65 }\)
• D) \(- \frac { 63 } { 65 }\)

---

Definitions:

Lost Sale

A situation in which a potential sale is not realized, often due to stock unavailability, pricing issues, or the customer's decision to purchase from a competitor.

Order Policy

Guidelines or rules defining how and when inventory orders should be placed to maintain optimal stock levels and minimize costs.

Random Numbers

Numbers generated in a sequence where each number has an unpredictable outcome, widely used in statistics, simulations, and cryptography.

Random Number Intervals

A range within which a random number falls, used in simulations and probabilistic models to represent uncertainty or variability.