Home
Class 11
MATHS
2cos(pi)/(13)cos(9 pi)/(13)+cos(3 pi)/(1...

2cos(pi)/(13)cos(9 pi)/(13)+cos(3 pi)/(13)+cos(5x)/(13)=0

Promotional Banner

Similar Questions

Explore conceptually related problems

Prove that: 2cos (pi)/(13) cos (9 pi)/(13)(3 pi)/(13)(5 pi)/(13)=0

Prove that 2cos(pi/13)cos((9pi)/13)+cos((3pi)/13)+cos((5pi)/13)=0

Prove that: 2cos pi/(13) cos (9pi)/(13) +cos (3pi)/(13) +cos (5pi)/(13)=0

Prove that: 2cos pi/(13) cos (9pi)/(13) +cos (3pi)/(13) +cos (5pi)/(13)=0

Prove that : 2cos""(pi)/(13)cos""(9pi)/(13)+cos""(3pi)/(13)+cos""(5pi)/(13)=0

Prove that 2 cos""(pi)/(13)cos""(9pi)/(13)+cos""(3pi)/(13)+cos""(5pi)/(13)=0

2cos ""(pi)/(13)cos""(9pi)/(13)+cos""(3pi)/(13)+cos""(5pi)/(13)= ................ A) -1 B) 0 C) 1 D) 1/2

The value of 2"cos"(pi)/(13)"cos"(9pi)/(13)+"cos"(3pi)/(13)+"cos"(5pi)/(13) is

2cos(pi/13)cos(9pi/13)+cos(3pi/13)+cos(5pi/13)=0