Question

Определить знак выражения Желательно с подробным решением

Answer 1

Tg(-pi/4)= -1<0
sin(-37pi/6)= -sin(6pi+pi/6)= -1/2<0
cos(390°)=cos(2pi+pi/6)=cos(pi/6)=sqrt(3)/2>0
-1*(-1/2)/(sqrt(3)/2)=(1/2)/(sqrt(3)/2)=sqrt(3)/3>0

Answer 2

Determining the Sign of an Expression

To determine the sign of an expression, we need to look at the given expression and identify the rules for determining the sign. Unfortunately, the search results provided do not contain specific information about a mathematical expression or the rules for determining its sign. Therefore, without a specific expression or context, it's not possible to provide a detailed solution for determining the sign of an expression.

If you have a specific mathematical expression in mind or if there are particular rules or guidelines you'd like to discuss for determining the sign of an expression, please provide more details so that I can assist you further.

If you have any other questions or need assistance with a different topic, feel free to ask!