If a, b and c are the sides of a triangle such that ${{a}^{4}}+{{b}^{4}}+{{c}^{4}}=2{{c}^{2}}({{a}^{2}}+{{b}^{2}})$ then the angles opposite to the side C is

Question

Accepted Answer

$45{}^\circ $ or $135{}^\circ $

Answer

$30{}^\circ $ or $100{}^\circ $

Answer

$50{}^\circ $ or $100{}^\circ $

Answer

$60{}^\circ $ or $120{}^\circ $

trigonometry

Question: If a, b and c are the sides of a triangle such that ${{a}^{4}}+{{b}^{4}}+{{c}^{4}}=2{{c}^{2}}({{a}^{2}}+{{b}^{2}})$ then the angles opposite to the side C is

trigonometry

Question: If a, b and c are the sides of a triangle such that ${{a}^{4}}+{{b}^{4}}+{{c}^{4}}=2{{c}^{2}}({{a}^{2}}+{{b}^{2}})$ then the angles opposite to the side C is

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