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So let's start with recalling what the tailor Siri's expended
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about. Zero for co sign. Is this negative
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one to the end, and then we have a
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two n factorial in the bottom X to the to
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end. And now I noticed that what we're trying
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to do here, we're trying to find the Taylor
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series expansion about zero again, but noticed that this
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is the first two terms of the tailor Siris for
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co sign. So all we need to do is
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adjust where we're starting R. Taylor Siri's. We're
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starting with the, um, with n equals 22
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as opposed to an equal zero, and we're doing