1.(1)画出长方形向右平移5格后的图形.
(2)原图的P点经过(1)中的平移后记作P1点,画出平移后的长方形绕P1点逆时针旋转90°后的图形.
2.原图中的Q点经过上述平移、旋转后的位置用数对表示是
3.(1)直角三角形ABC中最长边BC是圆的直径,O是圆心,线段AO与AC的长度相等.点A在O
(2)∠1=
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