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"Si" is a form of "si", a conjunction which is often translated as "if". "Tienes razón" is a phrase which is often translated as "you're right". Learn more about the difference between "si" and "tienes razón" below.
si(
see
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
tienes razón(
tyeh
-
nehs
rrah
-
sohn
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (informal) (general)
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
b. you're correct
Tienes razón; la raíz cuadrada de 36 no es cuatro sino seis.You're correct; the square root of 36 is not four but six.