A-Level Maths: E1-14 [Trigonometry: Finding the Area of Triangles]

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Super teacher! Folks I had my calculator (no idea how...) stuck on the wrong mode and kept getting the answer out by about four digits or so. Make sure you are in Deg on the calculator.

simeonbanner
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2:45 why can't that angle also be (180-51) = 129? Sin inverse only gives you one of the values, right? Not sure where I'm going wrong. Recent maths lessons in college have confused me a bit :?

billylardner