The problem is meaningless without a diagram but I am guessing that ABC make a triangle and D is on the extension of AB beyond B. In that case we use the exterior angle theorem to get CBD = C + A, so...
Here is the problem with this question. If AC is perpendicular to CB, then they must share a common endpoint, namely C. And we know that angle ACB must be a right angle. Now in order to make CBD 125...