The line x = 1 is tangent to the unit circle at A. The length of segment
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The line x = 1 is tangent to the unit circle at A. The length of segment QA equals the length of the circular arc (see figure). Show that the length of segment OR approaches 2 as P approaches A.
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sin PB OP AQ AP 0 BR OR OB OR cos 0 PB cos 0 OB The triangles A4QR a...View the full answer
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