# Mathematics

November 20th, 2020

## Vectors in Space – 5 best ways to calculate

Vectors in Space Part 1 The Sphere: In space, the collection of all points that are the same distance from some fixed point is called a sphere. See the illustration below. The constant distance is called the radius, and the fixed point is the center of the sphere. Show that the equation of a sphere […]

November 12th, 2020

## Polar Coordinates, Parametric and Rectangular Equations – 3 easy ways to calculate the equations

Polar Coordinates Part 1Projectile Motion: Alice throws a ball straight up with an initial speed of 40 feet per second from a height of 5 feet. a. Find parametric equations that model the motion of the ball as a function of time. b. How long is the ball in the air. c. When is the […]

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