Homework help please no link

Classify the following triangle check all that apply

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39