“已知三角形的两边及其中一边对角,解三角形”类型的问题需要判断解的个数,若已知角与所求角为特殊角,学生容易解决,若为一般角,很多学生在处理时感到非常棘手。下面结合自己的教学实践,对这类问题进行探讨: “Known triangle on both sides and one of the diagonal, triangular solution ” type of problem needs to determine the number of solutions, if the known angle and the required angle is a special angle, the students easy to solve, if the angle is normal, many students It's tricky to deal with. The following combination of their own teaching practice, to explore such issues: