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Videos of Spring Semester DC Pre-Calculus

Compute Work


Express a Vector as the Sum of Two Orthogonal Vectors


Find the Projection of One Vector Onto Another Vector


Use the Dot Product to Determine if Two Vectors are Orthogonal


Find the Angle Between Two Vectors


Find the Dot Product of Two Vectors


Solve Applied Problems Involving Vectors


Write a Vector in Terms of its Magnitude and Driection


Find the Unit Vector in Terms of its Magnitude and Direction


Perform Operations with Vectors in Terms of i and j


Represent Vectors in the Rectangular Coordinate System


Visualize Scalar Multiplications, Vector Addition, and Vector Subtraction as Geometric Vectors


Use Magnitude and Direction to Show Vectors are Equal


Graph Variations of y = csc x and y = sec x


Understand the graphs of y = csc x and y = sec x


Graph Variations of y = cot x


Understand the graph of y = cot x


Graph Variations of y = tan x


Understand the graph of y = tan x


Use Vertical Shifts of Sin and Cos


Graph Variations of y = cos x


Understand the graph of y = cox x


Graph Variations of y = sin x


Model Periodic Behavior


Understanding the Graph of y = sin x


Periodic Properties


Even and Odd Trig Functions


Domain and Range of Sin and Cos Functions


Use the Unit Circle to Define Trig Functions


Use Reference Angles to Evaluate Trig Functions


Reference Angles


Use the Signs of Trig Functions


Definitions of Trig Functions at Any Angle


Right Triangle Trig Word Problems


Evaluate Trig Functions with a Calculator


Use Equal Cofunctions of Complements


Recognize and Use Fundamental Identities


Find Functions Values for 30, 45, and 60


Use Right Triangles to Evaluate Trig Functions


Use Linear and Angular Speed to Describe Motion on a Circular Path


Find the Length of a Circular Arc


Find Coterminal Angles


Draw Angles in Standard Position


Convert Between Degrees and Radians


Use Radian Measure


Use Degree of Measure


Recognize and Use the Vocabulary of Angles