monty43spears wrote:The values are not specified. It should be solved without values ?
Yes. The answer should be given in terms of a, b and c.
monty43spears wrote:And there is no such angle called AEF in the figure. Please correct it.
Oh sorry. Fixed; although I can't edit my post, so you might need to bypass your browser's cache to see it. (The angle AEF does exist, by the way, but it obviously isn't a right angle).