small angle approx | Revision Server | Page 1

meager burrow Mar 29, 2024, 10:29 AM

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I don’t get how the OA - OC is = 1 - costheta

tranquil maple Mar 29, 2024, 10:31 AM

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Radius is 1, so OA is 1

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OC is cos(theta) by the right angles triangle

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So OA - OC = 1 - cos Theta

meager burrow Mar 29, 2024, 10:35 AM

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Wait how does the right angle make OC the cos(theta)

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Like the adj over hypotenuse

tranquil maple Mar 29, 2024, 10:48 AM

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Yeah

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OB is also a radius so hypotenuse is 1

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So cos(theta) = adj/1

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Adjacent = cos(theta)

meager burrow Mar 29, 2024, 10:50 AM

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Ohhhh I understand thank you

#small angle approx