tan(a+b)tan(a-b)=1 Trigonometric equation solved!

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An instagram follower asked me this question: Find all values of A such that tan(A+B)tan(A-B)=1. It wasn't a very easy question but I worked it out! Had to use a bunch of trigonometric identities. Enjoy!





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Eddie the Magic Monk has 16 years teaching experience as a high school teacher in Australia. He will explain things to you in the simplest way possible to help you fully understand high school mathematics and computer science concepts.

Eddie began his tutorial channel on Youtube in 2012. His videos have been well received all over the world and now has 22+ million views! He sees the benefit in multidisciplinary learning hence his tutorials cover topics ranging from maths to dance.




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Great job! I'm sure lots of people are searching for this support in education!

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