^- 10. d, A 200-26 x=3 160-X/80- Abott 4a749-2 180-x+80 +604xx = 12041- x-xxx 7-90° 140° - a d₂ d₁ // d₂ X = ? 8-140 9-70° 10- 120° + a 26​

10 D A 20026 X3 160X80 Abott 4a7492 180x80 604xx 12041 Xxxx 790 140 A D D D X 8140 970 10 120 A 26 class=