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by mech422
1361 days ago
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I'm a 50+ year old American, of british decent...
I never managed to remember the 'american' mnemomic, but my dad taught me one the used to use in England around WWII:
Percy has a bald head, poor boy Perpendicular/hypotanuse = Sin Base / Hypotanuse: CoSin Perpendicular / Base: Tan edit: try to fix the HN god awful formatting |
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