" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
cos α = b^2 + c^2 - a^2 / 2bc
cos A = 6^2 + 7^2 - 4^2 / 2x6x7 = 36+49-16 / 84 = 0,8
A = arc cos 0.8
= 37 derajat...
cos B=
cos C=
lainnya sama begituuuu