(1)图中B在A点________方,距A点________米处.
(2)已知C在A点西北方,距A点200米处,请在图中点上小黑点,并标上“C”字样.
(3)图中A点可用数对(5,2)表示,意思是A点在第5组第2排上.那么,D点可用数对________来表示,意思是D点在第________组第________排上;E点用数对表示为(2,4),请在图中点上小黑点,并标明“E”字样.
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