Given that ∠1 and ∠2 are two acute angles of a right triangle, ∠1=23°, then ∠2=how many.
已知∠1、∠2是直角三角形的两个锐角，∠1=23°，那么∠2=多少．
<gadget id="calculator">180 - 90 - 23</gadget>
<output>67</output>

<result>67</result>