The possible values of theta in(0,pi) such that sin theta+sin-Turito

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The possible values of $theta element of left parenthesis 0 comma pi right parenthesis$ such that $sin invisible function application theta plus sin invisible function application 4 theta plus sin invisible function application 7 theta equals 0$ are :

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$\frac{π}{4}, \frac{5 π}{2}, \frac{π}{2}, \frac{2 π}{3}, \frac{3 π}{4}, \frac{8 π}{9}$
$\frac{2 π}{9}, \frac{π}{4}, \frac{π}{2}, \frac{2 π}{3}, \frac{3 π}{4}, \frac{35 π}{6}$
$\frac{2 π}{9}, \frac{π}{4}, \frac{4 π}{9}, \frac{π}{2}, \frac{3 π}{4}, \frac{8 π}{9}$
$\frac{2 π}{9}, \frac{π}{4}, \frac{π}{2}, \frac{2 π}{3}, \frac{3 π}{4}, \frac{8 π}{9}$

Answer:The correct answer is: $fraction numerator 2 pi over denominator 9 end fraction comma pi over 4 comma fraction numerator 4 pi over denominator 9 end fraction comma pi over 2 comma fraction numerator 3 pi over denominator 4 end fraction comma fraction numerator 8 pi over denominator 9 end fraction$

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