Let the base of the equilateral be 1 unit.
a = 180-22-16-38
a = 180-76
a = 104°
(1/sin104) = (b/sin38)
b = 0.6345091075 units.
c = 180-16-44-38
c = 180-98
c = 82°
(1/sin82) = (d/sin(38+44))
d = 1 unit.
e² = 0.6345091075²+1-2*0.6345091075cos22
e = 0.4753825906 units.
(0.4753825906/sin22) = (0.6345091075/sinf)
f = 30°
f is the required angle.
? = 30°
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