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```				   dear sir ,
my humble salutatations .

can u please tell me the formulas in trigonometry which are very important and must be learnt thoroughly.
thanking you.
yours sencerly
shshaank
```

7 years ago

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```										Dear shashaank kumar
you can refer Trignomentry chapter of RD Sharma text book for formulas.
that formulas is enough for IIT JEE

Please feel free to post as many doubts on our discussion forum as you can. If you find any question Difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE preparation.  All the best Shashaank Regards, Askiitians Experts Badiuddin

```
7 years ago

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