Trigonometry 5 The Cosine Relationship
A geometrical explanation of the law of cosines.
From playlist Trigonometry
Applying the law of cosines to solve a word problem
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 angle measure and the length of the side opposite th
From playlist Solve Law of Cosines (Word Problem) #ObliqueTriangles
Using the law of cosines for a triangle with SAS
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 angle measure and the length of the side opposite th
From playlist Law of Cosines
Applying the law of cosines when given SAS
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 angle measure and the length of the side opposite th
From playlist Law of Cosines
How to use law of cosines for SSS
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 angle measure and the length of the side opposite th
From playlist Law of Cosines
Learning to apply the law of cosines when given one obtuse angle
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 angle measure and the length of the side opposite th
From playlist Law of Cosines
How to use the law of cosines to find the missing parts of a triangle
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 angle measure and the length of the side opposite th
From playlist Law of Cosines
Trigonometry 7 The Cosine of the Sum and Difference of Two Angles
A geometric proof of the cosine of the sum and difference of two angles identity.
From playlist Trigonometry
How to use the law of cosines to find out no triangles exist
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 angle measure and the length of the side opposite th
From playlist Law of Cosines
Verifying Trigonometric Identities With Double Angle Formulas
This trigonometry video tutorial provides a basic introduction on verifying trigonometric identities with double angle formulas and sum & difference identities. It contains plenty of examples and practice problems. New Trigonometry Playlist: https://www.youtube.com/watch?v=oxhXz9_uyiM&
From playlist New Precalculus Video Playlist
Chebyshev Polynomials via cos(1°)
In this video, we introduce and motivate the Chebyshev polynomials (1st kind) in proving that the cosines of numerous angles must be irrational numbers. No advanced math beyond high school trigonometry is needed to understand this video, which is quite remarkable considering the many real-
From playlist Math
Math 023 Fall 2022 112122 Double and Half Angle Formulae
Review the addition formulae; write down the double-angle formulae. Using the formula to prove an identity about cos(3A). Using the formula to express sin(2A) in terms of sin(A) (by using the Pythagorean identity). More application of Pythagorean identity: different formulae for cos(2A)
From playlist Course 1: Precalculus (Fall 2022)
This calculus video tutorial provides a basic introduction into trigonometric integrals. It explains what to do in order to integrate trig functions with even powers and how to employ u-substitution integration techniques and power reducing formulas in order to find the indefinite integra
From playlist New Calculus Video Playlist
How to Use Product to Sum and Sum to Product Formulas in Trig (Precalculus - Trigonometry 29)
Several examples of the Product to Sum and Sum to Product Formulas for Sine and Cosine that are used in Trigonometry. Proofs of the formulas are also demonstrated. Support: https://www.patreon.com/ProfessorLeonard
From playlist Precalculus - College Algebra/Trigonometry
The Double Angle Formulas - (4 of 4: Trigonometric Identities)
In this video I look at the double angle trigonometric identities and go through some example problems using all of the identities we have seen so far in this series. Support the channel: https://www.youtube.com/channel/UCf89Gd0FuNUdWv8FlSS7lqQ/join
From playlist Trigonometry - A-level/year 12
In this video, I go through 6 questions verifying trig identities. I show how to use pythagorean identities, identities for tangent, cosecant, secant, and cotangent to verify various trig identities. The examples I go through vary in difficulty, with the last example being the most challen
From playlist Pre-Calculus
Solving Trigonometric Equations | A-level Mathematics
Solving trigonometric equations - from the basics to more challenging problems. This is a large topic but with practice and a good understanding of the fundamentals you can master it quickly. *At 11:53 the interval should be for x, not theta ❤️ ❤️ ❤️ Support the channel ❤️ ❤️ ❤️ h
From playlist Trigonometry - A-level/year 12
Verifying Trigonometric Identities || 15 Examples
This video contains 15 examples of verifying trigonometric identities. I hope this helps someone. If you enjoyed this video please consider liking, sharing, and subscribing. Udemy Courses Via My Website: https://mathsorcerer.com Free Homework Help : https://mathsorcererforums.com/ My
From playlist Math Tutorials
Math 023 Fall 2022 111822 Trigonometric Addition Formulae
Warm-up problems: some simple trigonometric identities. Addition formulae for sine and cosine functions. Use: to expand our knowledge to more complicated angles. Examples: simple example; rate of change; double-angle formulae. Why are these formulae true? Proof of one (due to Cauchy)
From playlist Course 1: Precalculus (Fall 2022)
Proof of the Law of Cosines: Alternate
Here is a lovely little proof of the law of Cosines that serves as an alternate to the one that may be presented in your text.
From playlist Trigonometry