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| A．A^2="B^2+C^2" or B^2="A^2+C^2" and C^2=A^2+B^2 |
| B．A^2="B^2+C^2" and B^2="A^2+C^2" or C^2=A^2+B^2 |
| C．A^2="B^2+C^2" and B^2="A^2+C^2" and C^2=A^2+B^2 |
| D．A^2="B^2+C^2" or B^2="A^2+C^2" or C^2=A^2+B^2 |
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
