cosine of a difference formula 190 videos

Volume and Surface Area
PreAlgebra Introductory Geometry
Vocabulary and formulas for surface area and volume of common solids

Exponential Growth and Decay
Algebra 2 Inverse, Exponential and Logarithmic Functions
How to use the exponential growth and decay formula.
exponential growth exponential decay 
Recursion Sequences
Algebra 2 Sequences and Series
How to use a recursion formula to represent the Fibonacci sequence.
recursion previous term Fibonacci 
Recursion Sequences
Precalculus Sequences and Series
How to use a recursion formula to represent the Fibonacci sequence.
recursion previous term Fibonacci 
Area of Kites and Rhombuses
Geometry Area
How to derive the area formula of a kite based on the rectangle formula; how to calculate the area of a rectangle using diagonal lengths.
kite area diagonals consecutive sides vertex angle non vertex angle bisect perpendicular rhombus 
Using the Inverse Trigonometric Functions
Precalculus Advanced Trigonometry
How to evaluate expressions like tan(sin (4/5))^(1).
sine cosine tangent inverse sine inverse cosine inverse tangent the unit circle 
Using the Inverse Trigonometric Functions
Trigonometry Advanced Trigonometry
How to evaluate expressions like tan(sin (4/5))^(1).
sine cosine tangent inverse sine inverse cosine inverse tangent the unit circle 
Using Trigonometric Identities
Precalculus Trigonometric Functions
How to simplify a trigonometric expression by converting to sines and cosines and using algebra.
reciprocal identities 
Using Trigonometric Identities
Trigonometry Trigonometric Functions
How to simplify a trigonometric expression by converting to sines and cosines and using algebra.
reciprocal identities 
Boiling Point Elevation
Chemistry Chemical Solutions
Understanding the colligative property of solutions that elevates boiling point.
boiling point elevation temperature difference vapor pressure atmospheric pressure 
SpeedInstantaneous Speed
Physics Linear and Projectile Motion
Understanding the differences between speed and instantaneous speed.
speed instantaneous speed distance time mechanics 
Vector Quantities  Scalar Quantities
Physics Linear and Projectile Motion
Understanding the differences between vectors and scalar quantities.
vector scalar quantities magnitude direction 
Centrifugal Force
Physics Circular Motion and Rotational Mechanics
Recognizing the differences between centripetal and centrifugal force.
centrifugal force centripetal force centrifuge 
Nouns
Grammar Parts of Speech
The different types of nouns and how to use them.
nouns common proper concrete abstract collective compound 
Cellular Energy Production
Biology Cell Functions and Processes
Understanding different types of cellular energy production.
cellular energy production photosynthesis ATP 
Cell Transport
Biology Cell Functions and Processes
An overview of cell transport and its different types.
cell transport passive active ATP cellular diffusion facilitated diffusion osmosis endocytosis exocytosis protein pumps phagocytosis pinocytosis 
Heterogeneous Equilibrium  Homgeneous Equilibrium
Chemistry Chemical Equilibrium
Understanding the difference between homogeneous and heterogeneous equilibrium.
homogeneous heterogeneous equilibrium 
Introduction to Real Numbers
Algebra 2 Real Numbers
How to classify different types of real numbers.
real numbers natural counting whole integer rational irrational 
The Product Rule
Calculus Techniques of Differentiation
How to differentiate a product of two functions.
differentiation derivative formula power functions the product rule of derivatives 
Polygon Angle Sum
Geometry Polygons
How to derive the formula to find the sum of angles in any polygon.
triangle angle sum diagonal polygon