Integration: $\int\frac{dx}{1+(\sin(x))^4}$

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What is the answer to this integration?

$$\int\frac{dx}{1+(\sin(x))^4}$$

how to solve in. it was asked in btec placement of a collage.

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write $$\sin(x)=\frac{2t}{1+t^2}$$ with $$t=\tan\left(\frac{x}{2}\right)$$ for your control, this is the result: $$\frac{\tan ^{-1}\left(\sqrt{1-i} \tan (x)\right)}{2 \sqrt{1-i}}+\frac{\tan ^{-1}\left(\sqrt{1+i} \tan (x)\right)}{2 \sqrt{1+i}}+C$$