Contact us
Choose a category below so we can get back to you as quickly as possible.
e=1/2 c=1 a=2 |PF1|+|PF2|=4 |PF1|=2.5 |PF2|=1.5 COS∠F1PF2=(2.5^2+1.5^2-2^2)/2*2.5*1.5=0.6
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.