题目

Emotional intelligence, or EQ, is the ability to read and understand emotions in ourselves and others. It is said that emotional intelligence makes up 80 percent of one’s success. Ever since the 1995 publication of US writer Daniel Goleman’s best-seller, Emotional Intelligence: Why It Can Matter More Than IQ, EQ has been seen by leaders and educators as the solution to many social problems. In some Western countries such as the US, emotional intelligence is now taught widely in secondary, business and medical schools.     EQ is important. But our enthusiasm for it has hidden a dar(1)设a＞b＞0,求证:.(2)已知0＜α＜π,证明2sin2α≤cot,并指出等号成立的条件.