# Magick 6 – 6 Fundamental Trigonometric Identities & Their Proofs

Hi there! It’s Tiago here and I’d like to show you this smashing product!

# Magick 6 – 6 *Fundamental* Trigonometric Identities & Their Proofs – sin(A±B), cos(A±B) and tan(A±B)

#### That’s what I call SOH CAH TOA!

Learn how to derive sin(A+B), sin(A-B), cos(A+B), cos(A-B), tan(A+B) and tan(A-B) from absolute scratch! In this fantastic new document, I show you how to derive sin(A+B), sin(A-B), cos(A+B) and cos(A-B) geometrically, then using these derivations – I then teach you how to come up with tan(A+B) and tan(A-B). With this amazing new product, you’ll be mastering trigonometry in no time!

Download Magick 6 today and derive the 6 most fundamental trigonometric identities with ease and simplicity! Mesmerise your friends, your professors and even yourself! For only \$2.99 it’s yours to keep!

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##### What does the document include?
• Geometrical sin(A+B), sin(A-B), cos(A+B) and cos(A-B) proofs plus tan(A+B) and tan(A-B) derivations  which then arise. PDF FORMAT
• sin(A+B), sin(A-B), cos(A+B) and cos(A-B) proofs. DRAWINGS, RULER & COMPASSES
• tan(A+B) and tan(A-B) handwritten proofs.
• Social links which you can use to get support from me if you require any help or assistance.
• SOH CAH TOA reminder text file.
• 15 free artistic / mathematical  images created by me which you can use for profile pictures on sites like Facebook.
• Strong algebraic skills.
• Familiarity with SOH CAH TOA.
• Basic knowledge about angles (i.e angles of a two dimensional triangle adding up to 180 degrees and also opposite angles being equivalent to one another).
• Desire to learn and comprehend mathematical proofs.
• Independent thinking and reasoning.
• Algebraic manipulation. You will have to access this site (MathsVideos.net) for extra maths tips – especially if it’s basic.
• How to understand angles, or what right angles are.
##### Why should I be trusted? Why should you have faith in my product?

Well, my Youtube channel now has 1,820 subscribers and counting. My Google + Mathematics Proofs community has 460 members. My Facebook page is followed by roughly 11,550 people – and I am the founder of MathsVideos.net. I’ve been working on my mathematics proofs project since the start of 2014. It gives me great pleasure to see people succeed in mathematics – and especially when they learn proofs along the way. Here’s what some of my Youtube subscribers have said regarding my trigonometric proofs:

`"Excellent video! Your explanation is superb." - @TheCherry1994`
`"So simply done. Great explanation. Thanks." - @Manoj Dhakal`
`"No question here, as the proof is crystal clear. I just wanted to say thankyou for sharing!" - @Ro C`
`"Great video, easy to understand. Thank you." - @Omar Alawsage`
`"Many thanks for this great work. Pretty clear work." - @Pete Mauser`