Brian McLogan
Find the value of the trigonometric expression using inverse
👉 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,...
Brian McLogan
Evaluate the trig expression with inverse tan
👉 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,...
Brian McLogan
Evaluate the 6 trig functions given a triangle and constraint
👉 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...
Brian McLogan
Evaluate the sine, cosine, and tangent for an angle using special right triangles
👉 Learn how to evaluate trigonometric functions using the special right triangles. A right triangle is a triangle with 90 degrees as one of its angles. A special right triangle is a right triangle with the angles 30, 60, 90 degrees or...
Brian McLogan
Use cofunction identities and trig identities to find indicated trig functions
👉 Learn how to evaluate trigonometric functions using trigonometric identities. Trigonometric identities are equalities that involve trigonometric functions. We will focus on the cofunction identities and even-odd identities. The...
Brian McLogan
Pre-Calculus - Learn How To Evaluate the Double Angle of Sine
👉 Learn how to evaluate the double angle of sine. The value of the sine of double a given angle can be obtained given the value of the sine of the angle. The value of the sine of double a given angle is obtained using the formula sin(2u)...
Brian McLogan
How to evaluate for the cosine of an angle using the half angle formula
👉 Learn how to evaluate the tangent of a half-angle. When given the value of the tangent of an angle, we can evaluate the tangent of half the angle using the tangent half-angle formula. When the value of any other trigonometric function...
Brian McLogan
Master Evaluating the double angle for Sine, Cosine and Tangent from a right triangle
Master Evaluating the double angle for Sine, Cosine and Tangent from a right triangle
Brian McLogan
Determine the missing long leg and short leg of a 30 60 90 triangle
👉 Learn about the special right triangles. A special right triangle is a right triangle having angles of 30, 60, 90, or 45, 45, 90. Knowledge of the ratio of the length of sides of a special right triangle enables us to solve for any...
Brian McLogan
Evaluate trigonometric functions - Math homework answers
👉 Learn how to evaluate trigonometric functions of a given angle. Given an angle greater than 2pi in radians, to evaluate the trigonometric functions of the given angle, we first determine the smallest positive coterminal angle of the...
Curated Video
Trig Identities: Using Tan Theta and Sine Squared Theta plus Cos Squared Theta
This video is a lecture presentation on using trigonometric identities to solve trigonometric equations. The presenter discusses the identities of Tan Theta being equal to sine Theta over Cos Theta and sine squared Theta plus Cos squared...
Brian McLogan
Determine the missing legs of a 45 45 90 triangle ex 4
👉 Learn about the special right triangles. A special right triangle is a right triangle having angles of 30, 60, 90, or 45, 45, 90. Knowledge of the ratio of the length of sides of a special right triangle enables us to solve for any...
Brian McLogan
Why the unit circle is so helpful for us to evaluate trig functions
👉 Learn about the unit circle. A unit circle is a circle which radius is 1 and is centered at the origin in the cartesian coordinate system. To construct the unit circle we take note of the points where the unit circle intersects the x-...
Brian McLogan
Sketch a triangle given a trig angle then determine remaining trig functions of angle
👉 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...
Brian McLogan
How to use special right triangles to find the value for cosine of 60 degrees
👉 Learn how to evaluate trigonometric functions using the special right triangles. A right triangle is a triangle with 90 degrees as one of its angles. A special right triangle is a right triangle with the angles 30, 60, 90 degrees or...
Brian McLogan
Evaluating the composition of Functions using Right Triangles
👉 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,...
Brian McLogan
Find the distance and bearing | Trigonometric Word Problem
Find the distance and bearing | Trigonometric Word Problem
Brian McLogan
Use cofunction identities and trig identities to find the indicated trig functions
👉 Learn how to evaluate trigonometric functions using trigonometric identities. Trigonometric identities are equalities that involve trigonometric functions. We will focus on the cofunction identities and even-odd identities. The...
Brian McLogan
Half angle of sine given right triangle and constraint
👉 Learn how to evaluate the tangent of a half-angle. When given the value of the tangent of an angle, we can evaluate the tangent of half the angle using the tangent half-angle formula. When the value of any other trigonometric function...
Brian McLogan
How to evaluate the half angle of cosine when given a triangle
👉 Learn how to evaluate the tangent of a half-angle. When given the value of the tangent of an angle, we can evaluate the tangent of half the angle using the tangent half-angle formula. When the value of any other trigonometric function...
Brian McLogan
How to find the missing length of a triangle without a calculator
How to find the missing length of a triangle without a calculator
Brian McLogan
How to create a triangle to evaluate the inverse trig function with x
How to create a triangle to evaluate the inverse trig function with x
Brian McLogan
One, Two, Or No Triangles (How Can You Tell)
The ambiguous case can be very confusing on how to determine 1, 2 or no triangles and how it can make sense. In this video I try to give you visual pointers as well as some formulas to help you remember what case you have. Hope it helps.
Brian McLogan
Master Evaluating the double angle for Sine, Cosine and Tangent, given an angle and constraint ex 3
Master Evaluating the double angle for Sine, Cosine and Tangent, given an angle and constraint ex 3