tanpa tabel carilah: tag 195 derajat

formula :
tan(a=b) = (tan(a) + tan(b))/(1 - tan(a)(tan(b))

tan(139) = tan(135 + 60)
= (tan(135 + tan(60))/(1 - tan(135)tan(60))
= (-1 + √3)/(1 - (-1)√3)
= .... lanjutkan