add cos funtion
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@ -21,7 +21,7 @@
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function minus(a, b) {
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return a-b;
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}
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function pow(a, b) {
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return Math.pow(a, b);
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}
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@ -29,6 +29,10 @@
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function abs(a) {
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return Math.abs(a);
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}
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function cos(a) {
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return Math.cos(a)
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}
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</script>
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</body>
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</html>
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