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Sum of Sines/Cosines in terms of Product
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Sum and product are interconvertible in trigonometry and hence, they play a very important role in solving the questions.

Sachin Rana
IIIrd Year UG, IITB | 115/120 in Maths in JEE Main (2016) | Qualified NSEA (Astronomy Olympiad) | YouTuber with over 73,000 subscribers.

Unacademy user
thanks mam for this new course.. its an request to u to continue this current affairs series till ibps po and clerk mains 2018
Swapnil Agarwal
4 months ago
I had an injury in my hand from which I've recovered today. Please stay tuned as I'll be regular from tomorrow.