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(Solved): \( \sin \mathrm{s}=\frac{3}{5} \) and \( \sin t=-\frac{5}{13}, \mathrm{~s} \) in quadrant \( \mathr ...
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\cos (s+t)=
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(Simplify your answer, including any radicals. Use integers or fractions for an expression.)
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\cos (s-t)=](https://media.cheggcdn.com/study/6bb/6bb41fa4-71ce-46a3-b09a-9fb753b90b71/image)
\( \sin \mathrm{s}=\frac{3}{5} \) and \( \sin t=-\frac{5}{13}, \mathrm{~s} \) in quadrant \( \mathrm{I} \) and \( \mathrm{t} \) in quadrant III \( \cos (s+t)= \) (Simplify your answer, including any radicals. Use integers or fractions for expression.)
\[ \cos (s+t)= \] (Simplify your answer, including any radicals. Use integers or fractions for an expression.) \[ \cos (s-t)= \] (Simplify your answer, including any radicals. Use integers or fractions for any expression.)
Expert Answer
sin?s=35andsin?t=?513 cos?s=1?sin2s cos?s=1?(35)2=1?(925)=1625 cos?s=45(since, s in quadrant I)