双曲正割表(弧度)
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sech(2.50) = sech(143°14'22") = 0.163071231929978
sech(2.51) = sech(143°48'44") = 0.161470045255142
sech(2.52) = sech(144°23'07") = 0.159884163663428
sech(2.53) = sech(144°57'29") = 0.158313453133245
sech(2.54) = sech(145°31'52") = 0.156757780449413
sech(2.55) = sech(146°06'15") = 0.155217013210108
sech(2.56) = sech(146°40'37") = 0.153691019833319
sech(2.57) = sech(147°15'00") = 0.152179669562846
sech(2.58) = sech(147°49'23") = 0.150682832473842
sech(2.59) = sech(148°23'45") = 0.149200379477921
支持0°到360°范围内的数值计算，提供最大值标记（0°处为1），可显示双曲正割钟形曲线图。支持导出计算结果为CSV格式。