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

question 106

Multiple Choice

Find the exact value of the expression using the provided information.
-Find $\cos ( \mathrm { s } - \mathrm { t } )$ given that $\cos \mathrm { s } = - \frac { 1 } { 6 }$ , with $\mathrm { s }$ in quadrant III, and $\cos \mathrm { t } = - \frac { 3 } { 5 }$ , with $\mathrm { t }$ in quadrant III.

• A) \(\frac { - 3 + 4 \sqrt { 35 } } { 30 }\)
• B) \(\frac { 3 + 4 \sqrt { 35 } } { 30 }\)
• C) \(\frac { 3 - 4 \sqrt { 37 } } { 30 }\)
• D) \(\frac { 3 - 4 \sqrt { 35 } } { 30 }\)

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Definitions:

Fixed Cost

Expenses that do not change with the level of goods or services produced by the business, such as rent for a building.

Managerial Levers

Tools or methods used by managers to influence the performance and direction of their organization.

Large Lots

Refers to the practice of bulk buying or producing goods in significant quantities to achieve economies of scale.

Fixed Cost

Expenses that do not change with the level of goods or services produced over the short term.