http://prntscr.com/dw7c2q Hi, just need help with part b. Answer is 28.125 cm. Thanks!
pikachu975 Premium Member Joined May 31, 2015 Messages 2,739 Location NSW Gender Male HSC 2017 Jan 16, 2017 #1 http://prntscr.com/dw7c2q Hi, just need help with part b. Answer is 28.125 cm. Thanks!
I InteGrand Well-Known Member Joined Dec 11, 2014 Messages 6,109 Gender Male HSC N/A Jan 16, 2017 #2 pikachu975 said: http://prntscr.com/dw7c2q Hi, just need help with part b. Answer is 28.125 cm. Thanks! Click to expand...
pikachu975 said: http://prntscr.com/dw7c2q Hi, just need help with part b. Answer is 28.125 cm. Thanks! Click to expand...
J jathu123 Active Member Joined Apr 21, 2015 Messages 356 Location Sydney Gender Male HSC 2017 Jan 16, 2017 #3 You can use the product of intercepts of intersecting chords theorem. Basically, CE*EF=AE*EB. Since CD bisects AB, AE=EB=7.5. Hence, CE*2=7.5^2 --> CE=7.5^2/2 = 28.125 cm
You can use the product of intercepts of intersecting chords theorem. Basically, CE*EF=AE*EB. Since CD bisects AB, AE=EB=7.5. Hence, CE*2=7.5^2 --> CE=7.5^2/2 = 28.125 cm
