Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §2.4 The Derivative of the Sine and Cosine, #5 · Calculus · Differentiation rules

… has period …, which means that … ____

$y = sin x$ has period $2 π$ , which means that $sin x =$ ____. The limit of $(sin (2 π + h) - sin 2 π) / h$ is 1 because ____. This gives $d y / d x$ at $x =$ ____.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §2.4 The Derivative of the Sine and Cosine, #5

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