I hear you man. I think I may have lucked out a bit with that one, although I didn't realize it until a few years after I left HS. Not bad with maths.
And right-angled triangles are practical and useful. A very good old carpenter friend only knows 3,4,5 for making a square frame or ... anything really. I have no idea which culture this elementary school mnemonic was meant to exploit, but Chief SohCahToa is ingrained in me still... African? Americas? Hawaian? :-)
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