Trigonometry 1 PREMIUM A-Level Pure Math

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https://play.google.com/store/apps/details?id=com.puremath.trigonometry1

★ Study your Pure Mathematics on the go; bus, café, beach, street, anywhere! 

★ Simplified explanations, plus extra side notes with even more explanation! 

★ Over 30 examples per chapter with step by step working. 

★ Past paper examination questions at the end of each chapter. 

★ Fully worked-out answers to every exercise per chapter are also available. 

✪ Check out our publication series here:
http://play.google.com/store/apps/dev?id=6466184711899020594

✪ Featured Pure Mathematics chapters:

1. Differentiation 1
2. Differentiation 2
3. Integration 
4. Further differentiation
5. Algebra 1
6. Binomial theorem
7. Algebra 2
8. Series
9. Trigonometry 1
10. Trigonometry 2

11. Further Integration 1
12. Exponential and Log functions
13. Partial fractions
14. Further Integration 2
15. Coordinate geometry 1
16. Curve sketching
17. Coordinate geometry 2
18. Differential equations 
19. Complex numbers
20. Vectors in 3-dimensions

✪ We've created an app for every Pure Maths chapter above.

✪ This app is for Chapter 9 referred to as TRIGONOMETRY 1.