The fishing rod is 2 m long and with angle of 30 degrees. What are the possible locations of fishes if the fishing lines are of the following lengths?[br]設魚桿長2 m，角度為30度。當魚絲為以下長度時，魚兒可能在哪裡？[br][br](a) 1.2 m[br](b) 2.2 m[br](c) 1 m[br](d) 0.8 m[br][br]GeoGebra 互動數學教室 [url=http://www.geogebra.hk]http://www.geogebra.hk[/url]