Sin -210 adalah ....
More Questions From This User See All
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Bab: TrigonometriRumus:
Sin(A - B) = sinA . cosB - cosA . sinB
Penyelesaian:
Cara cepat:
sin -210
= -(-1/2)
= 1/2
Cara dengan rumus:
sin -210
= sin(-90 - 120)
= sin-90 . cos-120 - cos-90 . sin-120
= -(1) . -(-1/2) - -(0) . 1/2√3
= 1/2 - 0
= 1/2