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A.k₁＜k₂＜k₃                                                             B.k₃＜k₁＜k₂

C.k₁＜k₃＜k₂                                                             D.k₃＜k₂＜k₁

A.＜α≤

B.0≤α＜或≤α＜π

C.0＜α＜或≤α＜π

D.＜α≤或0≤α＜

①若sinα₁=sinα₂,則直線l₁與l₂重合  ②若cosα₁=cosα₂,則直線l₁與l₂重合  ③若cosα₁＞cosα₂，則直線l₁的斜率大于l₂的斜率  ④若tanα₁＞tanα₂，則直線l₁的傾斜角大于l₂的傾斜角

A.1個(gè)                                                             B.2個(gè)

C.3個(gè)                                                             D.4個(gè)

A.π－α                                                            B. －α

C.α                                                                 D.－α

A.                                                               B.

C.±                                                             D.±

①直線的傾斜角表示直線的傾斜程度，直線的斜率不能表示直線的傾斜程度  ②直線的傾斜角越大其斜率就越大  ③直線的斜率越大其傾斜角就越大  ④直線的傾斜角的正切值叫做直線的斜率

A.0                                                                 B.1

C.2                                                                 D.3

A.2                                                                 B.1

C.－1                                                              D.不確定

A.                                                               B.

C.arctan(－)                                              D.π－arctan

A.                                                            B.－ 

C.－                                                        D.  

A.k₁＞k₂α₁＞α₂                                          B.k₁＜k₂α₁＞α₂

C.α₁＜α₂k₁＜k₂                                          D.α₁≠α₂k₁≠k₂