If the polar coordinates of a point are (7, 120°), its rectangular coordinates are: A
【题目】polar coordinates A coordinate system in which a point in the plane is located in terms of its distance r from the origin and the angle a between the positive x-axis and the line connecting the point to the origin, measured counterclockwise in radians. The polar coordinates of a ...
The polar coordinates ( r , θ ) of a point P give the distance r of P from the pole O and the angle θ , measured anticlockwise, between OP and the initial line. Since the distance OP is a positive number, the convention that r takes positive values only will be adopted in this ...
Define polar coordinate. polar coordinate synonyms, polar coordinate pronunciation, polar coordinate translation, English dictionary definition of polar coordinate. polar coordinate The polar coordinates of point P are . n. Either of two coordinates, the
Answer to: The rectangular coordinates of a point are given. Find the polar coordinates of the point. Express degree in radians. (-5,5) By signing...
In Problem, the rectangular coordinates of a point are given. Find two pairs of polar coordinates (r, θ ) for each point, one with r > 0 and the other with r < 0. Express θ in radians.(0,-2) 相关知识点: 试题来源: 解析 (2,-( π )2), (-2,( π )2) ...
Related to polar coordinates:Spherical coordinates pl n (Mathematics) a pair of coordinates for locating a point in a plane by means of the length of a radius vector,r,which pivots about the origin to establish the angle, θ, that the position of the point makes with a fixed line. Usuall...
The meaning of POLAR COORDINATE is either of two numbers that locate a point in a plane by its distance from a fixed point on a line and the angle this line makes with a fixed line.
Because cos and sin are periodic, different (r, θ) can represent the same point in the plane. The table below shows this for a few points. In fact, you can add any multiple of 2π to θ and the polar coordinates will still represent the same point. Because θ is not uniquely speci...
A point, P, can be described in Cartesian coordinates as P(x,y), or in polar coordinates as P(r, θ), where r is the radius and θ is the angle from the terminal arm (the positive section of the x-axis). From Chapter 8, the expressions which relate x and y to r and θ ...