Curated Video
GCSE Maths - All the Trigonometry Equations you Need To know! #119
This video covers the basics of trigonometry. We cover the different equations you need to know to be able to fine missing sides, missing angles or areas of both non-right angle and right angle triangles. This video is suitable for maths...
Brian McLogan
Make sure you pick the right identity to help you verify
In this video I will help you determine how to choose the right identity when you are verifying identities. It may seem obvious but often it is not. ⭐️ A secret weapon most students overlook to verify an identity - • Most students...
Curated Video
The Importance of Irrationality
Princeton University physicist Paul Steinhardt reveals how irrational ratios of two repeating patterns produces intriguing and unexpected effects.
Brian McLogan
Learn to basics of eliminating the parameter with sine and cosine
Learn how to eliminate the parameter in a parametric equation. A parametric equation is a set of equations that express a set of quantities as explicit functions of a number of independent variables, known as parameters. Eliminating the...
Brian McLogan
Master Solving for the missing sides of a triangle for ASA and AAS using law of sines
Master Solving for the missing sides of a triangle for ASA and AAS using law of sines
Brian McLogan
Learn how to solve equation using double angle formula
👉 Learn how to use the double angle identities to solve trigonometric equations. When we have equations with a double angle we will apply the identities to create an equation that can help solve by inverse operations or factoring. We...
Curated Video
Solving Oblique Triangles with the Law of Cosines
This video explains how to find the angle measures and side lengths of an oblique triangle when all the side lengths are given. It introduces the law of cosines as a formula that relates the sides and angles of a triangle. The video...
Brian McLogan
Verify an identity with double angle identities
👉 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
Finding the missing parts of a triangle AAS law of sines
👉 Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the...
Brian McLogan
Learn how to verify an identify by distributive property
👉 Learn how to verify trigonometric identities by expanding the trigonometric expressions. When the given trigonometric expressions involve multiplications with more than one term in parenthesis, we start by expanding the expressions...
Brian McLogan
Learn how to verify a trigonometric identity
👉 Learn how to verify rational trigonometric identities involving the addition and subtraction of terms. To verify trigonometric expression means to verify that the term on the left-hand side of the equality sign is equal to the term on...
Brian McLogan
Applying the law of cosines to a triangle to find the missing length
Learn how to solve for the lengths of the sides and the measures of the angles of a triangle using the law of cosines. The law of cosines is used in determining the lengths of the sides or the measures of the angles of a triangle when no...
Brian McLogan
How to use the law of sines to find the missing parts of a triangle
👉 Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the...
Brian McLogan
Verifying trigonometric identities using even and odd
👉 Learn how to verify trigonometric identities having rational expressions. To verify trigonometric expression means to verify that the term on the left hand side of the equality sign is equal to the term on the right hand side. To...
Brian McLogan
Subtracting a rational trigonometric expression from another
👉 Learn how to simplify rational identities involving addition and subtraction. To simplify rational identities involving addition and subtraction, first, we find the LCM of the denominators which most time is the product of the terms in...
Brian McLogan
Determine 1, 2, or no triangles law of sines
👉 Learn how to determine if a given SSA triangle has 1, 2 or no possible triangles. Given two adjacent side lengths and an angle opposite one of them (SSA or ASS), then there are 3 possible cases: there can be 1 solution, 2 solutions,...
Brian McLogan
When provided two angles use the law of sines to find the missing values
👉 Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the...
Brian McLogan
Verifying an identity by multiplying
👉 Learn how to verify trigonometric identities by expanding the trigonometric expressions. When the given trigonometric expressions involve multiplications with more than one term in parenthesis, we start by expanding the expressions...
Brian McLogan
Verifying a hard identity with multiple steps
👉 Learn how to verify Pythagoras trigonometric identities. A Pythagoras trigonometric identity is a trigonometric identity of the form sin^2 (x) + cos^2 (x) or any of its derivations. To verify trigonometric expression means to verify...
Brian McLogan
Learn how to solve a trigonometric equation using double angle formula
👉 Learn how to use the double angle identities to solve trigonometric equations. When we have equations with a double angle we will apply the identities to create an equation that can help solve by inverse operations or factoring. We...
Brian McLogan
Use pythagorean identities and reciprocal identities to simplify a trig expression
👉 Learn how to verify trigonometric identities having rational expressions. To verify trigonometric expression means to verify that the terms on the left-hand side of the equality sign is equal to the terms on the right-hand side. To...
Brian McLogan
Prove an identity be creating and adding fractions
👉 Learn how to verify trigonometric identities involving the addition and subtraction of terms. To do this it is usually useful to convert the addition or subtraction terms in terms of one trigonometric function and then evaluate....
Brian McLogan
Multiply two trig functions using co function and even odd identities
👉 Learn how to simplify trigonometric expressions by factoring, expansion, and re-grouping. To simplify a trigonometric identity means to reduce the identity to the simplest form it can take which may be a number or a simple...