[SOLVED] Find the first TWO non-negative asymptotes and the first negative asymptote

Find the first TWO non-negative asymptotes and the first negative asymptote of the graph of https://webwork.uncc.edu/webwork2_fi...22b824af51.png in radians

smallest non-negative asymptote: https://webwork.uncc.edu/webwork2_fi...9019052b81.png

second non-negative asymptote: https://webwork.uncc.edu/webwork2_fi...9019052b81.png

first negative asymptote: https://webwork.uncc.edu/webwork2_fi...9019052b81.png

okay, i know the first one is pi/5

but the other two i do not know how to find. can some one please help me?

but i keep thinkin the other two answers are x=+-(pi/10). (which is wrong)