Question

solve:sin theta + sin 2 theta + sin 3 theta + sin 4 theta= zero.find theta.
ans. is i)theta=π/2(2n+1)
ii)theta=π/4(2n+1)
iii)theta=π/8(2n+1)
these all are ans.please tell how to solve it.

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Answer 1

Answer:

any doubt msg me,I explained above in pic