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https://drive.google.com/file/d/1dcol59Dlc8JvL7aSVFYg94nai9Zl4PE8/view?usp=sharing

 Apr 2, 2022
 #1
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tan(a) = 3, tan(b) = 3/5, tan(b + c) = 5/3

 Apr 2, 2022

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