Let AD = 1 unit.
a = 180-62-56
a = 62°
a is angle ADC.
It implies;
AD = AC = 1 unit.
b = 180-48-88
b = 44°
b is angle ABC.
(1/sin44) = (c/sin88)
c = 1.4386796007 units.
c is AB.
d² = 1.43867960072+1²-2*1*1.4386796007cos(56+48)
d = 1.9405914526 units.
d is BD.
Therefore, the required angle, x is;
(1.9405914526/sin(48+56)) = (1/sinx)
x = 30°
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