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Answer:
angle = 15°
Step-by-step explanation:
cot( 2x+45) = tan (30-x)
wkt , tan(*)=cot(90-*)
cot ( 2x+45) = cot (90-(30-x))
cot (2x+45) = cot ( 90-30+x)
cot ( 2x+45) = cot (60+x)
2x+45 = 60+x
2x-x = 60-45
x = 15
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