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function distance(form) {
var x1 = eval(form.x1.value);
var y1 = eval(form.y1.value);
var z1 = eval(form.z1.value);
var x2 = eval(form.x2.value);
var y2 = eval(form.y2.value);
var z2 = eval(form.z2.value);
var x3 = eval(form.x3.value);
var y3 = eval(form.y3.value);
var z3 = eval(form.z3.value);
var x4 = eval(form.x4.value);
var y4 = eval(form.y4.value);
var z4 = eval(form.z4.value);
var a = x1+y1/60+z1/3600;
var b = x2+y2/60+z2/3600;
var c = x3+y3/60+z3/3600;
var d = x4+y4/60+z4/3600;
var adiff = a-c
var bdiff = b-d
form.answer1.value = Math.sqrt(Math.pow(((111.3200144*Math.cos(b*Math.PI/180)+111.3200144*Math.cos(d*Math.PI/180))*adiff/2), 2)+Math.pow(110.9481458*bdiff, 2));
}
function flyingtime(form) {
var a1 = eval(form.a1.value);
var b1 = eval(form.b1.value);
var c1 = eval(form.c1.value);
var a2 = eval(form.a2.value);
var b2 = eval(form.b2.value);
var c2 = eval(form.c2.value);
var a3 = a1*60+b1+c1/60
var b3 = a2*60+b2+c2/60
form.answer2.value = b3-a3;
}
function speed(form) {
var x1 = eval(form.x1.value);
var y1 = eval(form.y1.value);
var z1 = eval(form.z1.value);
var x2 = eval(form.x2.value);
var y2 = eval(form.y2.value);
var z2 = eval(form.z2.value);
var x3 = eval(form.x3.value);
var y3 = eval(form.y3.value);
var z3 = eval(form.z3.value);
var x4 = eval(form.x4.value);
var y4 = eval(form.y4.value);
var z4 = eval(form.z4.value);
var a = x1+y1/60+z1/3600;
var b = x2+y2/60+z2/3600;
var c = x3+y3/60+z3/3600;
var d = x4+y4/60+z4/3600;
var adiff = a-c
var bdiff = b-d
var a1 = eval(form.a1.value);
var b1 = eval(form.b1.value);
var c1 = eval(form.c1.value);
var a2 = eval(form.a2.value);
var b2 = eval(form.b2.value);
var c2 = eval(form.c2.value);
var a3 = a1*60+b1+c1/60
var b3 = a2*60+b2+c2/60
form.answer3.value = Math.sqrt(Math.pow(((111.3200144*Math.cos(b*Math.PI/180)+111.3200144*Math.cos(d*Math.PI/180))*adiff/2), 2)+Math.pow(110.9481458*bdiff, 2))*1000/(b3-a3);}
// End -->
信鸽比赛 空距、分速计算
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