Which of the following was one c o n t r i b u t i o n muslimaticians made today's word a a widely used system of n u m e r a l s b advanced t r i g o n o m e t r y c d p y t h a g o r e a n t h e o r e m d a system of navigation numbers

The contribution made by Muslim mathematicians that is widely used today is the system of numerals. The Hindu-Arabic numeral system, which includes the digits 0-9, was introduced to the Western world by Muslim mathematicians during the Islamic Golden Age. This numeral system is now the most commonly used system of numerals worldwide.

Muslim mathematicians also made advancements in trigonometry, including the development of trigonometric functions and the use of trigonometry in geometric and astronomical calculations. They also made contributions to the understanding and application of the Pythagorean theorem.

Additionally, Muslim mathematicians developed systems of navigation numbers that were used for maritime navigation and exploration. These systems involved the use of specialized numerical calculations to determine positions, distances, and routes at sea.