definition
☼ Relation between two lines with respect to Slopes :–
Let the slopes of two distinct lines l1 and l2 are respectively m1 and m2, then if
(i) …
☼ Slope ( m ) of a line :–
If a line is perpendicular to X – axis ( or vertical ), then Slope = m = ∞
If a line is parallel to Y – axis ( or
☼ Equation of a line :–
⟶ Parametric Equation of a line :
{ (x, y) / x = tx2+ (1 – t)x1, y = ty2+ (1 – t)y1 ; t ∈ R }
☼ Angle of Depression : Suppose a man from a point P looks down at an object B, placed below the level of his eye, then the angle which the line of sight makes with the horizontal through P, is called the angle of depression…
☼ Angle of Elevation : Suppose a man from a point P looks up at an object B, placed above the level of his eye. Then, the angle which the line of sight makes with the horizontal through P, is called the angle of elevation of B a…