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Cuboid questionpaper1highermathsedecell

Cuboid questionpaper1highermathsedecell

Can any body remember question?

yeah basically it gave you an angle to work out, and the lengths of two sides of the triangle (Opposite and Hypotenuse). It wasn't as hard as some 3d trig questions but that's to be expected since it was a non-calculator question. The side opposite the angle was 6.8cm. The hypotenuse was 13.6cm. So since sinx=o/h, sinx=6.8/13.6 = 1/2. so then it's just exact trig values, knowing that sin 30 = 1/2 so the angle must be 30. Really the fact that the triangle was in a cuboid didn't matter, it was just obfuscating the actual question.