Flag Magical Mathematics[Interesting Approach]> ∑ nCr * (n-r) * cos{(2*r*pi)/n} where ‘r’...
question mark

∑ nCr * (n-r) * cos{(2*r*pi)/n}
where ‘r’ ranges from ‘0’ to ‘n’ = ??

sambit , 10 Years ago
Grade 12
anser 1 Answers
Sourabh Singh

Last Activity: 10 Years ago

Hiii

Use cos in terms of Exponential adn then separate out the terms. Then operate individually you will get the answer.


star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments