已知参考点，和另一点距其的相对位置，求另一点的经纬度

[{"title":"（ 12 个子文件 537KB ） 已知参考点，和另一点距其的相对位置，求另一点的经纬度","children":[{"title":"转成经纬度","children":[{"title":"mm","children":[{"title":"mm.opt <span style='color:#111;'> 47.50KB </span>","children":null,"spread":false},{"title":"mm.dsp <span style='color:#111;'> 4.15KB </span>","children":null,"spread":false},{"title":"mm.dsw <span style='color:#111;'> 512B </span>","children":null,"spread":false},{"title":"Debug","children":[{"title":"vc60.pdb <span style='color:#111;'> 108.00KB </span>","children":null,"spread":false},{"title":"mm.pdb <span style='color:#111;'> 1.04MB </span>","children":null,"spread":false},{"title":"vc60.idb <span style='color:#111;'> 81.00KB </span>","children":null,"spread":false},{"title":"mm.exe <span style='color:#111;'> 528.11KB </span>","children":null,"spread":false},{"title":"mm.ilk <span style='color:#111;'> 766.40KB </span>","children":null,"spread":false},{"title":"mm.obj <span style='color:#111;'> 149.01KB </span>","children":null,"spread":false}],"spread":true},{"title":"mm.plg <span style='color:#111;'> 238B </span>","children":null,"spread":false},{"title":"mm.cpp <span style='color:#111;'> 1.16KB </span>","children":null,"spread":false},{"title":"mm.ncb <span style='color:#111;'> 49.00KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true}]