This is a geometric question. Since, Length AB and DC are given , the triangle inscribed in a circle is a 45° right triangle. This implys that angle A equals 45° and its pair base angle equals 45°. Join line BC which is a perpendicular line. Angle CBD equals 135°. We need to find the radius, R and osme important angles before we can find the angle X and length DB.
There are important tricks that you will learn in the lesson. These includes the use of Pythagora´s theorem, Trigonometric Identities,and Triangle rules. You will, also, learn angle -length relationship tips should you come across similar problems, it will be easier fot you to solve.
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Негізгі бет REQUIRED TO FIND ANGLE X AND THE LENGTH, DB.
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