# Solve this and plzz don't give any link. Q.14. Let a, b, c be positive real numbers. Let $\theta ={\mathrm{tan}}^{-1}\sqrt{\frac{a\left(a+b+c\right)}{bc}}+{\mathrm{tan}}^{-1}\sqrt{\frac{b\left(a+b+c\right)}{ca}}+{\mathrm{tan}}^{-1}\sqrt{\frac{c\left(a+b+c\right)}{ab}}$. Then

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