—What a _______ day it is!
—Yes. It hasn't been so wet for long days.
A:sunny
B:windy
C:rainy
D:cloudy
如图,将Rt△ABC绕直角顶点顺时针旋转90°,得到△A′B′C,连接AA′,∠1=26°,则∠B的度数是____