Come valuti # sec ^ 2 (pi / 3) #?
Risposta:
#sec^2(pi/3)=4#
Spiegazione:
As #cos(pi/3)=1/2#,
#sec(pi/3)=1/(cos(pi/3))=1/(1/2)=2#
Quindi #sec^2(pi/3)=2^2=4#
#sec^2(pi/3)=4#
As #cos(pi/3)=1/2#,
#sec(pi/3)=1/(cos(pi/3))=1/(1/2)=2#
Quindi #sec^2(pi/3)=2^2=4#