Hello, I've been playing around with these two trigonometry problems in my notebook and I can't seem to solve them. Heres a link to problems and my answers, https://imgur.com/a/CYkY5.

Question 34 doesn't seem difficult to me, its when I get to the x-intercepts, Where is the function increasing? Where is the function decreasing? I'm not sure how to approach these since the diagram they included doesn't give me enough information on x axis to show what is what. For example the x-intercepts are 45, 135, 225 and 315 degrees, but I'm not sure if there right since I can't see the full axis. Is there a way to tell exactly what they are?

Question 35 has by far given me the most problems I think I tried about 5-8 times but I just don't seem to understand how to do it. When it states the x-intercept is 50 degrees does that mean it only touches up once and the reset is under? I'm just unaware on how to start.