saya mau tanya cara menghitung trigometri untuk sudut istimewah

sin 30 = ½
cos 30 = √3/2
(1+½)/(√3/2) + (½)/(1+½)
= (3/2)/(√3/2) + (½)/(3/2)
= (3/2)×(2/√3) + (1/2)×(2/3)
= (3/√3) + (1/3)
= (3√3/3) + (1/3)
= (3√3 + 1)/3