Home
Class 11
MATHS
The value of sum(r=0)^(10)cos^3((rpi)/3)...

The value of `sum_(r=0)^(10)cos^3((rpi)/3)` is equal to (a)`1/4` (b) `1/8` (c) `-1/4` (d) `-1/8`

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

sum_(r=1)^(n-1)cos^(2)""(rpi)/(n) is equal to

The value of | sum_(r=1)^(23) cos ((rpi)/(12))| is

The value of sum sum_(r=1)^(10)(2^(r-1)+8r-3) is equal to :

Find sum_(r=1)^(10) cos^(3) rpi/3 .

The value of sum _(r =1) ^(oo) (8r)/(4r ^(4) +1) is equal to :

The value of sum_(r=1)^(8)(sin(2rpi)/9+icos(2rpi)/9) , is

The value of sum_(r=0)^(9)(10C_(r))/(^^^10C_(r)+^(10)C_(r+1)) is equal to

{(1/3)^2}^4 is equal to (1/3)^6 (b) (1/3)^8 (c) (1/3)^(24) (d) (1/3)^(16)