Which of the following are the coordinates of vertices of the following square centered at the origin, with side length b?

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n