<p>The angle, \(\theta\)  created between a straight line and the positive x-axis is equal to its slope, \(m=\tan{\theta}\).</p>
<div class="graph-block" data-graph-config="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" data-width="300" data-height="200" style="width:300px;height:200px;max-width:100%;display:block;margin:0 auto;"></div>
<p>slope, \(m=\frac{y_2-y_1}{x_2-x_1}=\tan{\theta}\)</p>

The angle, \(\theta\)  created between a straight line and the positive x-axis is equal to its slope, \(m=\tan{\theta}\).

slope, \(m=\frac{y_2-y_1}{x_2-x_1}=\tan{\theta}\)

Trigonometric Ratios

International Baccalaureate Standard Level Mathematics