Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §2.4 The Derivative of the Sine and Cosine, #13 · Calculus · Differentiation rules

The unmarked points in Figure 2.11 are … and

The unmarked points in Figure 2.11 are $P$ and $S$ . Find the height $P S$ and the area of triangle $O P R$ . Prove by areas that $sin h < h$ .

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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, #13

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