Question

Find all solutions to sin^2-cos^2=1

Answer 1

sin^2-cos^2=1
sin^2-cos^2=sin^2x+cos^2x
-cos^2=+cos^2x
Can you take the problem from here ?

Answer 2

Possibly is there a next step or is the only solution just 0?

Answer 3

idk how to go on... sorry -:(

Answer 4

@Loser66

Answer 5

thank you for the start!!

Answer 6

-cos^2 = cos^2
2cos^2 =0 iff cos^2 =0
or cos=0 when x = 0 + 2kpi

Answer 7

clear?

Answer 8

ohhh alright that makes sense. thank you so much!

Answer 9

oh, sorry when x = pi/2 +kpi, not 0, I think of sin

Answer 10

ohh alright. thanks again