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濡傚浘
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锛?/p>
33
锛?/p>
1
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P
鏄垹
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OA
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5)
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(
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1
A.
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13
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2
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3
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2
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(
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鍥?/p>
K
锛?/p>
33
锛?/p>
2
A
锛?/p>
sin
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cos
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B
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tan
C
锛?/p>
2