Gimana caranya sih.
nilai cos 120°-sin 210°+315°=
nilai cos 120°-sin 210°+315°=
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.
sin210=(180+30)=-sin30=-(1/2)
sin315=(360-45)=-sin45=-(1/2√2)
Jadi, (-1/2)-(-1/2)+(-1/2√2) = -1/2√2
Semoga Membantu ^_^