Question

who used the symbol √ for square root​

Answer 1

Answer:

Regiomontanus (1436–1476).

used the symbol √ for square root

The first use of a capital R with a diagonal line was in 1220 by Leonardo of Pisa in Practica geometriae, where the symbol meant "square root" (Cajori vol. 1, page 90). The radical symbol first appeared in 1525 in Die Coss by Christoff Rudolff (1499-1545). He used the symbol (without the vinculum) for square roots.

Answer 2

Answer:

CHRISTOPH RUDOLFF'S COSS

Step-by-step explanation:

The letter jīm resembles the present square root shape. Its usage goes as far as the end of the twelfth century in the works of the Moroccan mathematician Ibn al-Yasamin. The symbol '√' for the square root was first used in print in 1525 in Christoph Rudolff's Coss.

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