Mark the correct alternative in the following:
If 
are in A.P. with common difference d, then the sum of the series sin d 
is
A. 
B. 
C. 
D. 
Here,a1, a2,…,an are in A.P.
Then d=a2-a1=a3-a2=…=an-an-1
1
Mark the correct alternative in the following:
If are in A.P. with common difference d, then the sum of the series sin d is
A.
B.
C.
D.
Here,a1, a2,…,an are in A.P.
Then d=a2-a1=a3-a2=…=an-an-1