1003108809

SubArea: 
Infinite series
Level: 
B
Project ID: 
1003108809
Accepted: 
1
Clonable: 
0
Easy: 
0
We are given the equation ∑n=1∞(sin⁡x)2n−2=2⋅tgx with the unknown x being a real number. What is the set of all its solutions?
⋃k∈Z{14π+k⋅π}
⋃k∈Z{34π+k⋅π}
⋃k∈Z{34π+k⋅π2}
⋃k∈Z{18π+k⋅π2}
⋃k∈Z{14π+k⋅π2}