 Hi, and welcome to our session. Let us discuss the following question. The question says ABC and ADC are two right triangles with common hybrid in use AC. Proof that under CAD is equal to under CBT. Let's first make a figure of this question. We have drawn two right triangles ABC and ADC with common hybrid in use AC. We have to prove that angle CAD is equal to angle CBT. Let's first write down the given information. We are given that ABC triangles hybrid in use AC is equal to angle CBT. Let's now begin with the proof question that angle V is equal to angle V as they both are of 90 degree. Now this implies angle V plus angle D is equal to 180 degree and this implies is a cyclic quadrilateral. The quadrilateral is 180 degree. The quadrilateral is cyclic. As ABCD is a cyclic quadrilateral therefore we can draw a circle passing through these four vertices. We have drawn a circle passing through all the vertices AD is equal to angle CBT segment and we know that angles segment are equal. We have proved AD is equal to angle CBT. So this completes the session. Bye and take care.