Art of Problem Solving
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Trigonometric identities: Revision history

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20 January 2024

27 March 2023

7 February 2023

19 November 2022

7 November 2021

2 October 2021

4 September 2021

8 July 2021

28 June 2021

9 June 2021

31 May 2021

30 May 2021

29 May 2021

30 July 2020

28 May 2020

24 April 2020

22 January 2020

17 June 2019

19 May 2019

28 April 2019

23 June 2017

8 February 2017

30 January 2017

21 November 2016

28 August 2016

16 June 2016

9 April 2016

1 February 2016

30 August 2015

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