Sum the following:(adsbygoogle = window.adsbygoogle || []).push({});

Sin(x) + Sin(x+d) + Sin(x+2d)........+Sin(x+(n-1)d).

I only know that summation of Sin and Cos functions whose arguments are in Arithmetic Progression can be done through telescopic series. But I dont know how to proceed. Please Help!

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# Homework Help: Summation of Trignometric Series

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