In a right triangle, the ratio of the degrees of the two acute angles is 3:2, what is the degree of the smaller acute angle?
一个直角三角形，两个锐角的度数比是3：2，较小的锐角是多少度．
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">90 * (2/5)</gadget>
<output>36</output>

<result>36</result>