点P的数据xyB3906900.714-117210.555β的计算xβ3906900.7140.613573629三角函数计算sinβcosβsin2β0.5757929140.8175955730.33153748B的计算f弧度十进制度度0.6159475335.2911938735N的计算N=6385277.668ffz的计算z=-0.022489319b的计算b=0.23683878722b的计算b=0.22279364133b的计算b=0.36016318244b的计算b=0.09285725155纬度B的计算B（弧度）=0.615827766B的计算弧度十进制度度0.61582776635.284331935经差l的计算弧度十进制度(绝对值)度-0.0224867851.2883978841经度B=111°-经差l=109°42分41.77秒L验证cos2βsin2β+cos2β0.668462521算分秒1728.297945735:17:03.84653N109:42:46.30829E点号X坐标（m）Y坐标（m）13243906900.714382789.445B50228976293697(238322cos2)cos2cos21010sincosfx/6367452.133zy/(NcosB)ffN6399596.65221565.047109.0030.612cos2Bcos2Bcos2Bffffb0.50.00336975cos2BsinBcosB2fffb0.3333330.16666670.001123cos2Bcos2B3ffb0.250.1616120.005617cos2Bcos2B4ffb0.20.166670.00878cos2Bcos2B5ff算分秒173.594845556分秒1718.232381341.77秒