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描述 \(\sin{(\frac{\pi }{2}-x)}=\cos{x}\) \(\cos{(\frac{\pi }{2}-x)}=\cot{x}\) \(\tan{(\frac{\pi }{2}-x)}=\csc{x}\) \(\cot{(\frac{\pi }{2}-x)}=\sin{x}\) \(\sec{(\frac{\pi }{2}-x)}=\tan{x}\) \(\csc{(\frac{\pi }{2}-x)}=\sec{x}\) |
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描述 \(\sin{(\frac{\pi }{2}-x)}=\cos{x}\) \(\cos{(\frac{\pi }{2}-x)}=\cot{x}\) \(\tan{(\frac{\pi }{2}-x)}=\csc{x}\) \(\cot{(\frac{\pi }{2}-x)}=\sin{x}\) \(\sec{(\frac{\pi }{2}-x)}=\tan{x}\) \(\csc{(\frac{\pi }{2}-x)}=\sec{x}\) |