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यदि sum(n=1)^(2015)tan((theta)/(2^(n)))s...

यदि `sum_(n=1)^(2015)tan((theta)/(2^(n)))sec((theta)/(2^(n-1)))=tan((theta)/(2^(a)))-tan((theta)/(2^(b)))` हो , तो (b+a) का मान है -

A

2014

B

2012

C

2013

D

2015

लिखित उत्तर

Verified by Experts

The correct Answer is:
D
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