Question

Qual o valor de sec60+sec30-cossec45+cossec315

Answer 1

Resposta:

1/cos(60) + 1/cos(30) -1/sen(45) + 1/sen(315)

**** sen(315) =sen(360-45) =sen(360)*cos(45) -sen(45)*cos(360) =-sen(45)

1/cos(60) + 1/cos(30) -1/sen(45) - 1/sen(45)

1/(1/2) + 1/(√3/2) -1/(√2/2) -1/(√2/2)

2 +2/√3 -4/√2

2 +2√3/3 -4√2/2

2 +2√3/3 -2√2 ~  0,3262734