(OB)2=(OA)2-(AB)2=(30)2-(5)2=√ 875=29.58
OC=30,CF=25 √OF=(50)2-(25)2=16.583
COF=SIN COF=25 = 56.442º
50
COF = O’
∆COF=∆O’CD
CF=O’D O’D=25
DH=O’H-O’D=30-25=5 6D=25
O’ of X50+25+25=100
O’ of ZOB+OF+CD=29.58+16.383+16.583=62.746
O” of X78-6=72
(100-72)
O’E= =14 O”O’=3+30=33
2 O’E=14
√O”E= 332-142=29.883
E of Z 62.746+29.883=92.629
I of X 72+1.2727+1.2727=74.5454
I of Z 92.629-2.7166=89.9124
SIN O’O”E =14 =25.1027º
33
I J=SIN 25.1027 x 3=1.2727
O”J=COS 25.1027 x 3=2.7166