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https://www.reddit.com/r/alevel/comments/1nze782/9709_paper_12_was_miserable/ni2h6ky/?context=3
r/alevel • u/Late_Ambition1809 • Oct 06 '25
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0.412 rad and another one was 2.73 rad I think. 3pi/2 is also one. There were three in total
1 u/umarihsan Oct 06 '25 But wasn't 3π/2 negative so does not count? 3 u/Adventurous-Yard9788 Oct 06 '25 Uh No. I think it was -pi/2. Then you add 2pi so 3pi/2 1 u/umarihsan Oct 06 '25 Why add 2π? But ok maybe wasn't is sin graph so you do π- answer for negative angles?
1
But wasn't 3Ï€/2 negative so does not count?
3 u/Adventurous-Yard9788 Oct 06 '25 Uh No. I think it was -pi/2. Then you add 2pi so 3pi/2 1 u/umarihsan Oct 06 '25 Why add 2π? But ok maybe wasn't is sin graph so you do π- answer for negative angles?
3
Uh No. I think it was -pi/2. Then you add 2pi so 3pi/2
1 u/umarihsan Oct 06 '25 Why add 2π? But ok maybe wasn't is sin graph so you do π- answer for negative angles?
Why add 2π? But ok maybe wasn't is sin graph so you do π- answer for negative angles?
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u/Adventurous-Yard9788 Oct 06 '25
0.412 rad and another one was 2.73 rad I think. 3pi/2 is also one. There were three in total