bharat bajaj
Last Activity: 11 Years ago
In my opinion, i think the question is wrong or it lacks some important information. It cant be equal to 1 or there may be some condition on a,b or c.
Suppose x=a=b=c=30 degrees..
In this case it isnt equal to 1..
Hence, it lacks some info.
THanks
Bharat Bajaj
askiitians Faculty
IIT Delhi