Unit 6 – Polar Coordinates and Vectors Vocab

What will Unit 6  –  Polar Coordinates and Vectors inform us about? Be specific!

• Unit 6 will inform us about polar coordinates, their representation, and operations involving vectors in polar form.
• Unit 6 will focus on the history of mathematics.
• Unit 6 will cover basic algebra and its applications.
• Unit 6 will teach about three-dimensional geometry.

What is polar coordinates?

• Polar coordinates are a system for representing points in a plane using a distance and an angle.
• A method for calculating distances in three-dimensional space.
• A way to represent points using only Cartesian coordinates.
• A system that uses only angles to define locations.

What are the two parts of a polar coordinate pair?

• The two parts are the diameter (d) and the height (h).
• The two parts are the base (b) and the exponent (e).
• The two parts are the radius (r) and the angle (θ).
• The two parts are the length (l) and the width (w).

When a radius is negative, why does the point flip?

• A negative radius has no effect on the point's position.
• The point flips because a negative radius reflects the point across the origin.
• A negative radius moves the point to a different quadrant without flipping.
• The point flips because the radius is squared.

When a angle is negative on a polar coordinate, what direction do you go?

• Counterclockwise direction
• Diagonal direction
• Clockwise direction
• Straight up direction

When a angle is positive on a polar coordinate, what direction do you go?

• Clockwise
• Straight up
• Downward
• Counterclockwise

What is the equation of find x value of trig function?

• rcos(x)=x

• rcos(x)=y

What equation to find the y value in polar coordinates?

• rsin(x)=y

• rsin(x)=x

True or False: One must use triangles to than convert from Polar to Rectangle and Vice Versa

• False
• Only for Polar to Rectangle
• Only for Rectangle to Polar
• True

• the slope of a line in slope-intercept form
• the area of a circle with radius r
• the perimeter of a rectangle with sides x and y
• the distance from the origin to a point (x,y) in Cartesian coordinates