7.7.19-eg - Example Find the value of cot cos−1 − 1 2...

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Unformatted text preview: Example Find the value of cot cos−1 − 1 2 Let x = cos−1 − 1 . Our goal is to find cot x. Since the range of the inverse cosine function 2 π is [0, π ], it follows that x = 23 . Therefore cot x = cot 2π 3 = (−1/2) −1 cos(2π/3) =√ =√ sin(2π/3) ( 3/2) 3 ...
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This note was uploaded on 04/02/2012 for the course MTH 132 taught by Professor Kihyunhyun during the Fall '10 term at Michigan State University.

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