A = (0,0)A=(0,0)
B = (x * cos 85^0, x * sin 85^0)B=(x⋅cos850,x⋅sin850)
C = B + (150 * cos 200^0, 150 * sin 200^0)C=B+(150⋅cos2000,150⋅sin2000)
|AC| = 195 = sqrt{C_x^2 + C_y^2}|AC|=195=√C2x+C2y
195^2 = (x * cos 85 + 150 * cos 200)^2 + (x * sin 85 + 150 * sin 200)^21952=(x⋅cos85+150⋅cos200)2+(x⋅sin85+150⋅sin200)2
195^2 = (x^2 * cos^2 85 + 150^2 cos^2 200 + 300x * cos 85 * cos 200) + (x^2 * sin^2 85 + 150^2 sin^2 200 + 300x * sin 85 * sin 200) 1952=(x2⋅cos285+1502cos2200+300x⋅cos85⋅cos200)+(x2⋅sin285+1502sin2200+300x⋅sin85⋅sin200)
195^2 = x^2 + 150^2 + x * (300 * cos 85 * cos 200 + 300 * sin 85 * sin 200) 1952=x2+1502+x⋅(300⋅cos85⋅cos200+300⋅sin85⋅sin200)
x^2 + bx - 15525 = 0x2+bx−15525=0
b = -126,78547852 cdotsb=−126,78547852⋯
Delta = 78174,5575641cdots
x = (-b pm 279,59713439895cdots)/2
x_1 = 203,1913cdots
x_2 = -76,4058279cdots