Xiaohong is in the direction of 45° east by north of Xiaoming. It can be said that Xiaohong is in how many directions of Xiaoming.
小红在小明的东偏北45°方向上，可以说小红在小明的多少方向上．
<gadget id="calculator">90 - 45</gadget>
<output>45</output>

<result>45</result>