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TRIGONOMETRY – the right-angled triangle by Karinna Traxler, Vienna designed for use in bilingual education http://www.univie.ac.at/future.media/moe/galerie/wfun/wfun.html#winkelf 1. The bigger the angle the _________________________ its sine. The bigger the angle the _________________________ its cosine. 2. a = 2.59, b = 1.75 c= = sin = cos = tan = cot = 3. a = 3, c = 5 b= = sin = cos = tan = cot = 4. a = 1.74, = 27.9° c= 5. 6. = 38°, c = 4 a= b= 7. a = 28 b = 50 Also check out: http://www.muenster.de/~stauff/bewmath.html look at the applets in „Geometrie“: Winkelmessung, Winkel an Parallelen, Winkelsumme, Strahlensätze.