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+<meta name="description" content="The angle of the vector (x, y), in radians.">
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+  <div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-math.html">Math</a> <span>›</span> <span class="here">Math.atan2</span></div>
+  <div class="item-head">
+    <span class="kind-badge kind-method">method</span>
+    <h1 id="top">Math.atan2</h1>
+  </div>
+  <code class="sig">Math.atan2(y, x) -&gt; fixed</code>
+  <div class="desc"><p>Returns the angle in radians from the positive x-axis to the point <code>(x, y)</code>, in the full range <code>-pi</code>..<code>pi</code> — the standard way to get a heading from a direction vector. Note the argument order is <code>y</code> then <code>x</code>. Deterministic fixed-point, accurate to within about a degree.</p></div>
+  
+  <div class="examples"><h2>Example</h2><pre data-lang="ludic">program Demo {
+  handler Step phase Update {
+    let heading = Math.atan2(target_y - y, target_x - x)
+  }
+}</pre></div>
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