From area (OBP) area (sector OBP) area (OBP) + area (ABPQ) in Figure, show that

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From area (OBP) ‰¤ area (sector OBP) ‰¤ area (OBP) + area (ABPQ) in Figure, show that
Cos t ‰¤ t/ sin t ‰¤ 2 - cos t
And thus obtain another proof that
From area (OBP) ‰¤ area (sector OBP) ‰¤ area (OBP)
From area (OBP) ‰¤ area (sector OBP) ‰¤ area (OBP)
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Calculus

ISBN: 978-0131429246

9th edition

Authors: Dale Varberg, Edwin J. Purcell, Steven E. Rigdon

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