Question

ABC is a right angled triangle with angle B = 90° , 'm' is the midpoint of AC and Bm=√117 cm , AB+BC=30 , then the area of the triangle ABC is?

Answer 1

In triangle ABC, B=90, C=45 So A=45. Now in triangle Angle is equal then the length opposite to the triangle are also http://equal. So AB=BC. From pythagoras therom AC = root 32. D is midpnot of AC so AD=(root 32)/2. An right Angle triangle ABD is formed. So again form pythagoras therom BD= root 8 which is 2 root 2.