Answer:
C. if not c D.
<em>good luck, i hope this helps :)</em>
<em>(also you might get more help if you post in the english category not math)</em>
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One half of the sum of a number and 10
n - a number
tan (angle T) = 5/2
angle T = arctan (5/2)
Step-by-step explanation:
This is a simplified solution.