[Risolto] Angoli

sen30° = 1/2;

cos60° = sen30° perché angoli complementari (30° + 60° = 90°).

tan30° = sen30° / cos(30°) = 1/2 /[(radice(3) / 2] = 1 / rad(3) = rad(3) / 3;

tan60° = sen60° / cos60° = [(radice(3) / 2] / (1/2) = rad(3) ;

1/2 - 1/2 + [rad(3) / 3] + rad(3) =

= [rad(3) / 3] + [rad(3)] =

= [rad(3) + 3 rad(3)] /3 = [4 rad(3)] /3 = (4/3) * rad(3).

ciao @martaaaa

SIN(30°) - COS(60°) + TAN(30°) + TAN(60°)=

=1/2 - 1/2 + √3/3 + √3=

=4·√3/3