In this paper, sharp bounds for cyclic sums of the ratio of the exradius to the sides of a triangle are established depending on the circumradius and inradius of the triangle. The best possible parameters for the expressions of bounds are derived. Moreover, an alternative bound for the ratio of the exradius to the sides of triangle, expressed by trigonometric functions, is also considered.
机构:
King Abdulaziz Univ, Fac Sci, Dept Math, POB 80203, Jeddah 21589, Saudi ArabiaKing Abdulaziz Univ, Fac Sci, Dept Math, POB 80203, Jeddah 21589, Saudi Arabia
Alzahrani, Faris
Salem, Ahmed
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机构:
King Abdulaziz Univ, Fac Sci, Dept Math, POB 80203, Jeddah 21589, Saudi ArabiaKing Abdulaziz Univ, Fac Sci, Dept Math, POB 80203, Jeddah 21589, Saudi Arabia
机构:
Dalian Univ Technol, Sch Math Sci, Dalian 116023, Peoples R China
Chinese Univ Hong Kong, Dept Stat, Shatin, Hong Kong, Peoples R ChinaDalian Univ Technol, Sch Math Sci, Dalian 116023, Peoples R China