第一周角的推广及弧度制A组一、填空题1.105°=弧度,-7π4弧度=度.2.sinπ3cosπ6+sinπ4cosπ4=.3.与-1020°终边相同的最小正角是,在[-3π,-π]与225°终边相同的角的弧度数是.4.角α的终边在第四象限,若将α的终边顺时针旋转π2,则与β角的终边重合,角β的终边在第象限,角β Promotion of the first week angle and radian A group 1. Fill in the blank 1.105°=radians, -7π4 radians=degrees.2.sinπ3cosπ6+sinπ4cosπ4=.3. The same minimum positive angle as the -1020° terminal edge is -3π, -π] The same number of arcs as the 225° terminal edge is .4. The terminal edge of the angle α is in the fourth quadrant. If you rotate the terminal edge of α clockwise by π 2, it coincides with the terminal edge of the angle β. The end of the angle β is in the quadrant, angle β