i got this question wrong, but i think my answer is correct. what do you think the answer is (question is in the image)?

Lexy is correct because angle r is between the incident wave,  n  = 0, and a diffracted wave.

Perhaps seek some professional ? it isn't very asking some children who are just trying to find out answers to homework.also, it seems professional would actually be good to you. obviously it isn't going to magically fix your depression, but it'll do something. drugs, smoking weed, it won't do much, especially if your husband is against it. if you do it he'll dislike it. but talk to him, try and get him to listen to you, and figure everything out together, okay? there's a website- maybe it can offer some ?

Iwould think it would be efficiency.

Answervery cold;