Answer:
D+42*=180*
D=180-42
138
Step-by-step explanation:
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138 Degrees
Because it is adjacent to the 42 degrees, just subtract 42 from 180 to get 138 degrees.
168
132, 135, 138, 141, 144, 147, 150, 153, 156, 159, 162, 165, 168
1/6 times the number cube wil land on 2
15