Trong khoảng (0, 2 pi], phương trình cos2x+sin2x=0 có tập nghiệm là

if you explain the the question more correctly i might be able to answer this better

step-by-step explanation:

konichiwa~! my name is zalgo and i am here to answer your anime-related question today. more than likely, kirishima would kill izuku, marry mino and kiss momo. all of this would be my opinion by the way. (and i am also a weeb lol)

i hope this you! : d

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the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3