Question

determine o valor do arco do cosseno 1590°

Answer 1

1590°= 4. 360 . 150 =150

sen(150)= sen(180-150)= sen 30°= raiz de 1/2

cos(150)= -cos(180-150)= -cos 30°= -raiz de 3/2

tag(150) = = tag(180-150) = -tag 30 = - raiz de3/ 3