Instructional Video4:52
Brian McLogan

When given a point, how to find the triangle to evaluate for the 6 trig functions

12th - Higher Ed
👉 Learn all about evaluating trigonometric functions with triangles. In this playlist, we will learn how to evaluate, sine, cosine, tangent, cotangent, secant, and cosecant when given the sides of a triangle. If we have missing sides we...
Instructional Video7:09
Brian McLogan

Using addition of two angles with triangles to evaluate for cosine

12th - Higher Ed
👉 Learn how to evaluate the secant of the sum or difference of two angles using the sum/difference formulas. To do this, we first use the Pythagoras theorem to obtain all the sides of the right triangle in the unit circle. Recall that...
Instructional Video5:54
Brian McLogan

Solving an equations using the sum and difference formulas of cosine

12th - Higher Ed
👉 Learn how to solve equations using the angles sum and difference identities. Using the angles sum and difference identities, we are able to expand the trigonometric expressions, thereby obtaining the values of the non-variable terms....
Instructional Video4:52
Brian McLogan

Graphing Polar points as they compare to rectangular points

12th - Higher Ed
Graphing Polar points as they compare to rectangular points
Instructional Video6:44
Curated Video

Graphing Sinusoidal Functions: Observing the Unit Circle and Plotting Points

K - 5th
In this video, students will learn how to graph sinusoidal functions by plotting points and observing the terminal ray of the unit circle. They will understand the patterns and periodicity of the sine and cosine functions, and how to...
Instructional Video5:27
Curated Video

Using a Unit Circle to Find Trigonometric Function Values

K - 5th
Learn how to use a unit circle to study angles and find the values of sine, cosine, and tangent functions. The teacher reviews the ratios of sides in special triangles and emphasizes the importance of drawing the reference triangle...
Instructional Video5:01
Brian McLogan

Given an angle and constraint find the six trig functions of the angle

12th - Higher Ed
👉 Learn how to evaluate the six trigonometric functions given some constraints. When given the value of one trigonometric function, we can use a right triangle with one of its legs on the x-axis and the other leg, perpendicular to the...
Instructional Video4:22
Brian McLogan

Given a point learn how to evaluate the six trig functions with reference angle

12th - Higher Ed
👉 Learn all about evaluating trigonometric functions with triangles. In this playlist, we will learn how to evaluate, sine, cosine, tangent, cotangent, secant, and cosecant when given the sides of a triangle. If we have missing sides we...
Instructional Video9:25
Brian McLogan

Pre-Calculus - Using the sum formula for cosine to evaluate an angle cos(75)

12th - Higher Ed
👉 Learn how to evaluate the cosine of an angle in radians using the sum/difference formulas. To do this, we first express the given angle as a sum or a difference of two (easy to evaluate) angles, then we use the unit circle and the...
Instructional Video6:17
Brian McLogan

Evaluate your six trig functions when given cotangent and a constraint on cosine

12th - Higher Ed
👉 Learn how to evaluate the six trigonometric functions given some constraints. When given the value of one trigonometric function, we can use a right triangle with one of its legs on the x-axis and the other leg, perpendicular to the...
Instructional Video1:36
Brian McLogan

Evaluating Inverse Trigonometric Functions

12th - Higher Ed
👉 Learn how to evaluate the inverse of reciprocal trigonometric functions. Recall that the reciprocal trigonometric functions are given by the ratio of 1 and the corresponding trigonometric function. When an angle is unknown but the...
Instructional Video3:06
Brian McLogan

Evaluate for Cosine Inverse Using the Unit Circle

12th - Higher Ed
👉 Learn how to evaluate the inverse of reciprocal trigonometric functions. Recall that the reciprocal trigonometric functions are given by the ratio of 1 and the corresponding trigonometric function. When an angle is unknown but the...
Instructional Video3:47
Brian McLogan

Learning how to solve an equation using the sum and difference formulas for sine

12th - Higher Ed
👉 Learn how to solve equations using the angles sum and difference identities. Using the angles sum and difference identities, we are able to expand the trigonometric expressions, thereby obtaining the values of the non-variable terms....
Instructional Video4:46
Brian McLogan

Solve a trigonometric function with sine on both sides

12th - Higher Ed
👉 Learn how to solve trigonometric equations by factoring out the GCF. When solving trigonometric equations involving the multiples of the same trigonometric function. It is very useful to collect similar trigonometric functions together...
Instructional Video2:24
Brian McLogan

How do you write a vector from component form to standard unit vector form

12th - Higher Ed
In this video playlist I show you how to solve different math problems for Algebra, Geometry, Algebra 2 and Pre-Calculus. The video will provide you with math help using step by step instruction. Math help tutorials is just what you need...
Instructional Video2:04
Brian McLogan

Composition of inverses free math help

12th - Higher Ed
👉 Learn how to evaluate an expression with the composition of a function and a function inverse. Just like every other mathematical operation, when given a composition of a trigonometric function and an inverse trigonometric function,...
Instructional Video1:28
Brian McLogan

Learn to evaluate the limit of tangent

12th - Higher Ed
👉 Learn how to evaluate the limit of a function involving trigonometric expressions. The limit of a function as the input variable of the function tends to a number/value is the number/value which the function approaches at that time....
Instructional Video1:30
Brian McLogan

Evaluating Inverse Trigonometric Functions

12th - Higher Ed
👉 Learn how to evaluate the inverse of reciprocal trigonometric functions. Recall that the reciprocal trigonometric functions are given by the ratio of 1 and the corresponding trigonometric function. When an angle is unknown but the...
Instructional Video2:11
Brian McLogan

Evaluate the six trig functions when given an angle in radians

12th - Higher Ed
👉 Learn how to evaluate the six trigonometric functions of a given angle. When given an angle we locate the angle on the unit circle. Then using the coordinate of the terminal side of the angle on the unit circle and the definitions of...
Instructional Video4:50
Brian McLogan

Solve trigonometric equation using identities and zero product property

12th - Higher Ed
👉 Learn how to solve trigonometric equations using the zero product property. The zero product property states that when the product of two quantities is equal to 0, then either of the quantities is zero. When solving factored...
Instructional Video8:10
Brian McLogan

How do you understand the direction of an angle

12th - Higher Ed
Learn how to determine the magnitude and direction of a vector. The magnitude of a vector is the length of the vector. The magnitude of a vector is obtained by taking the square root of the sum of the squares of the components of the...
Instructional Video3:00
Brian McLogan

Evaluate your six trig functions given cotangent

12th - Higher Ed
👉 Learn how to evaluate the six trigonometric functions given the value of one of the trigonometric functions. When given the value of one of the trigonometric functions of an angle, we can evaluate the values of the other trigonometric...
Instructional Video11:21
Brian McLogan

How to write a vector in three different forms

12th - Higher Ed
How to write a vector in three different forms
Instructional Video11:48
Brian McLogan

Finding the angle between 2 vectors given vectors as linear combinations with angles

12th - Higher Ed
Learn how to determine the angle between two vectors. To determine the angle between two vectors you will need to know how to find the magnitude, dot product and inverse cosine. Then, the angle between two vectors is given by the inverse...