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How can you write a program that prints a table of trigonometric values for sin cos and tan?
Wiki User
∙ 15y ago
<div id="trig"></div>
<script type="text/javascript">
function getTrigTable( minAngle, maxAngle, step) {
var angle, trigArr = [], resultsArr= [], deg2rad = Math.PI / 180.0, i, tableHTML = "";
minAngle = parseFloat( minAngle );
if (isNaN( minAngle )) minAngle = 0;
maxAngle = parseFloat( maxAngle );
if (isNaN( maxAngle ) maxAngle < minAngle) maxAngle = 360;
step = Math.abs(parseFloat( step ) 1);
for (angle = minAngle; angle <= maxAngle; angle += step) {
trigArr[0] = angle + "°";
trigArr[1] = Math.round(Math.sin( angle * deg2rad ) * 1e7) / 1e7;
trigArr[2] = Math.round(Math.cos( angle * deg2rad ) * 1e7) / 1e7;
trigArr[3] = Math.round(Math.tan( angle * deg2rad ) * 1e7) / 1e7;
if (trigArr[2] == 0) trigArr[3] = "∞";
resultsArr.push( trigArr.slice() );
}
for (i = 0; i < resultsArr.length; i++) {
tableHTML += "<tr><td>" + resultsArr[ i ].join( "</td><td>" ) + "</td></tr>";
}
return "<table border="1"><thead>" +
"<tr><th>Angle</th><th>Sin</th><th>Cos</th><th>Tan</th></tr>" +
"</thead><tbody>" + tableHTML + "</tbody></table>";
}
window.onload = function() {
document.getElementById( "trig" ).innerHTML = getTrigTable();
}
</script>
Wiki User
∙ 15y ago
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