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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §10.3 Convergence Tests: All Series, #31 · Calculus · Series

The cosine of … radian is

The cosine of $θ = 1$ radian is $1 - \frac{1}{2 !} + \frac{1}{4 !} - \dots$ . Compute $cos 1$ to five correct decimals (how many terms?).

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §10.3 Convergence Tests: All Series, #31

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