রিসোর্স সেন্টার GEOMETRY লেখক : Tanzirul Bashar - December 3, 2014 0 1193 FacebookTwitterPinterestWhatsApp Find the value of b0 from the above figure. 940 680 580 930 780 Hints : Sum of all the angles in a triangle is 1800 a + 86= 180 (straight line angle) a= 180 – 86 or, a = 94 Now, a +28+ b = 180 or, b = 180- (94+28) or, b = 180 – 122 or, b = 58