Determine All Solutions of the Equation in Radians $\cos ( \mathrm { s } - \mathrm { t } )$

question 287

Multiple Choice

Determine all solutions of the equation in radians.
-Find $\cos ( \mathrm { s } - \mathrm { t } )$ given that $\cos \mathrm { s } = - \frac { 4 } { 5 }$ , with $\mathrm { s }$ in quadrant II, and $\cos \mathrm { t } = \frac { 12 } { 13 }$ , with $\mathrm { t }$ in quadrant IV.

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

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