应用:
(1)如果,,
①______(填“是”或“不是”)的加权伴随角;
②______(填“是”或“不是”)的加权伴随角;
(2)点O在直线上,点分别为射线上一点,射线以每秒顺时针旋转,同时射线以每秒逆时针旋转,设旋转的时间为秒.
①当时,判断是否为的加权伴随角,并说明理由;
②若,求的值;
③在三个角中,若是另外两个角的加权伴随角,直接写出的值.
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