Cho ánh xạ tuyến tính f : R^3 → R^3 và hai cơ sở của R^3 :
1 answer:
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Answer:
x = 4
Step-by-step explanation:
In
Hence, by basic proportionality theorem:
The 2 lines are parallel, so the 2 sides(e.g. 1 and 2/ 3 and 49) add up = 180 and In this case the 2 sides are equal as u can see from the original diagram so the angle of 2 is 180-49=131.
