Answer:180.3
Step-by-step explanation:
a=150
b=50
C=120
c^2=a^2+b^2-2 x a x b x cosC
c^2=150^2+50^2-2x150x50xcos120
c^2=150x150+50x50-2x150x50xcos120
c^2=22500+2500-15000cos120
c^2=25000-15000x-0.5
c^2=25000+7500
c^2=32500
c=√(32500)
c=180.3
Im not for sure if i did this right but my calculator says that its 420.
hope i helped.
Here is an easy way to figure this out, do 16/5 (16 divided by 5) then what ever that equals, times it by 2 since it's 2/5 not 1/5.
Once you do all of this, it should equal 6.4
Answer:20
Step-by-step explanation:
