(1)将Rt△ABC先向左平移5个单位长度,再向下平移1个单位长度得到Rt△A1B1C1,请在图中画出Rt△A1B1C1,并写出点A1的坐标.
(2)再将Rt△A1B1C1绕点A1顺时针旋转90°后得到Rt△A2B2C2,请在图中画出Rt△A2B2C2,并直接写出Rt△A1B1C1在上述旋转过程中点B1所经过的路径长.
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2