题目

Product Description Life Without Limits helps you clarify what you want in every area of your life. By using Bassett’s powerful techniques you will change; therefore your life will change. You control you life. will change. You control your life. And only you can take steps to change it. Life Without Limits helps you take back your power. Life Without Limits helps you to achieve satisfaction and fulfillment personally, professionally, and financially. Once you have defined what success means for you, you will clarify your dreams and start pursuing them. Product Details ●Published 如图所示，在△ABC中，∠ABC，∠ACB的平分线相交于点O，根据下列条件，求∠BOC的度数．（1）若∠ABC=80°，∠ACB=40°，则∠BOC= ；（2）若∠ABC=∠ACB=80°，则∠BOC= ；（3）若∠A=90°，则∠BOC= ；（4）若∠A=x°，则∠BOC= ；（5）探究：从以上四个小题中，你能得出∠BOC与∠A的数量关系吗？若能，写出∠BOC与∠A的关系，并说明理由．