help?

First we need to find the hypotenuse using the Pythagorean theorem.

5² + 12²  =  hypotenuse²

25 + 144  =  hypotenuse²

169  =  hypotenuse²

13  =  hypotenuse

sin A  =  side opposite A / hypotenuse  =  12 / 13

cos A  =  side adjacent to A / hypotenuse  =  5 / 13

sin B  =  side opposite B / hypotenuse  =  5 / 13

tan A  =  side opposite A / side adjacent to A  =  12 / 5

tan B  =  side opposite B / side adjacent to B  =  5 / 12

sin A  =  12/13

cos A  =  5 / 13 

sin B  =  5 / 13

tan A  =  12 / 5

tan B  =  5 / 12

All of these statements are correct.

Look at each correct statement and compare it to each option in the question.

sin A  =  12 / 13     so is it true that     sin A = 5 / 13    ?  No

cos A  =  5 / 13      so is it true that     cos A  =  5 / 13   ?  Yes

Do you see what I'm doing? Can you figure out the rest?