某地理兴趣小组在一固定位置,于二分二至中各三个时间段拍摄太阳视运动轨迹(h2这一天的正午太阳高度是40°)叠加整理如图。据此完成下面小题。
1.该地位于( )
A.赤道附近 | B.北回归线附近 | C.50°N附近 | D.50°S附近 |
A.知了不知耕种苦,坐闲枝上唱开怀 | B.万物苏萌山水醒,农家岁首又谋耕 |
C.衰荷滚玉闪晶光,一夜西风一夜凉 | D.白雪欲求吟咏句,穿枝掠院演梅花 |
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