291 Videos for "trigonometry"

The Cosine Addition Formulas  Problem 1
Math › Trigonometry › Advanced Trigonometry
How to use the cosine of a difference formula to simplify an expression or to find the cosine of an angle. 
Angle Inclination of a Line  Problem 2
Math › Trigonometry › Advanced Trigonometry
How to find the angle of inclination of a line. 
The Sine Addition Formulas  Problem 1
Math › Trigonometry › Advanced Trigonometry
How to use the sine of a sum formula to simplify an expression or to find the sine of an angle. 
The HalfAngle Identities  Concept
Math › Trigonometry › Advanced Trigonometry
How to use the power reduction formulas to derive the halfangle formulas. 
The DoubleAngle Formulas  Problem 2
Math › Trigonometry › Advanced Trigonometry
How to derive a tripleangle formula for cosine. 
The Inverse Tangent Function  Problem 3
Math › Trigonometry › Advanced Trigonometry
How to graph a simple transformation of y = tan1 x 
The HalfAngle Identities  Problem 1
Math › Trigonometry › Advanced Trigonometry
How to use a halfangle formula to evaluate sin(/8). 
Solving Trigonometric Equations  Problem 3
Math › Trigonometry › Advanced Trigonometry
How to solve a simple trig equation involving secant. 
Using Sine to Calculate the Area of a Triangle  Concept
Math › Trigonometry › Basic Trigonometry
How to calculate the area of any triangle using two sides and an included angle. 
The Sine Addition Formulas  Problem 3
Math › Trigonometry › Advanced Trigonometry
How to evaluate sin(a ? b) and sin(a + b) when you know only cos(a) and sin(b). 
The Sine Addition Formulas  Problem 2
Math › Trigonometry › Advanced Trigonometry
How to derive the sine of a difference formula and use it to find the sine of an angle. 
Using Sine to Calculate the Area of a Triangle  Problem 1
Math › Trigonometry › Basic Trigonometry
How to calculate the area of a triangle using two sides and an included angle. 
Using the Inverse Trigonometric Functions  Problem 2
Math › Trigonometry › Advanced Trigonometry
How to find an algebraic expression that is equivalent to sec2(tan1 x). 
The Cosine Addition Formulas  Problem 2
Math › Trigonometry › Advanced Trigonometry
How to derive the cosine of a sum formula and use it to find the cosine of an angle. 
The HalfAngle Identities  Problem 3
Math › Trigonometry › Advanced Trigonometry
How to use the doubleangle formulas for sine and cosine to derive a halfangle formula for tangent. 
The DoubleAngle Formulas  Concept
Math › Trigonometry › Advanced Trigonometry
How to use the sine and cosine addition formulas to prove the doubleangle formulas. 
Using the Inverse Trigonometric Functions  Concept
Math › Trigonometry › Advanced Trigonometry
How to evaluate expressions like tan(sin (4/5))^(1). 
The DoubleAngle Formulas  Problem 1
Math › Trigonometry › Advanced Trigonometry
How to use the sine and cosine doubleangle formulas to find sin(2a) and cos(2a) when sin(a) is known. 
Solving Trigonometric Equations  Problem 1
Math › Trigonometry › Advanced Trigonometry
How to solve a simple cosine equation: cos x = ?2/2. 
Bonus Math Content
Test Prep › ACT › ACT Math
Short, helpful video on ACT Trigonometry by top ACT prep instructor, Devorah. Videos are produced by leading online education provider, Brightstorm.