Question

calcular tan ( 45-30) si tan 45= 1 y tan 30 = 0,57

Answer 1

$<var>[tex]tan 45 = 1 , \ \tan 30 = 1/\sqrt{3} \\tan (45 - 30) \\1 - 1/\sqrt{3} = \\(\sqrt{3} - 1)/\sqrt{3} = \\ = 0.422649$[/tex]

Answer 2

Respuesta:

tan (45°+30°)=tan ( 45°+30°)=cos (45°+30°)