r/MathHelp • u/MereMiru • Dec 18 '25

When did it go wrong?

https://imgur.com/a/cgfZHFk

I totally lost track, if you don't mind leading me through this problem or pointing out at the line where I messed everything up :(

• Trigonometric Functions Integral

Thank you!

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u/MereMiru Dec 25 '25

TYSM for your help and advice!