Find ##sin(45) cos(45) tan(45)## and flip their values to find the remaining three.

It would be easier to use a unit circle to memorize this stuff. 45 degrees = ##pi/4 = [sqrt(2)/2 sqrt(2)/2]##

The X value is cosine the Y is sine and ##y/x## is tangent.

##sin(45)= sqrt(2)/2 and csc(45)=2/sqrt(2)##

##cos(45) = sqrt(2)/2 and sec(45)=2/sqrt(2)##

##tan(45) = 1 and cot(45) = 1##