The data is a little bit complex,but you can use the knowledge of vector in the subject of algebra,or you can ultimate the basic Euclidean knowledge,like cosine theorem.In detail,you can list two equation with two variable,and get the answer.but i don't finish calculating it.
Answer:
that is the solution to the question
Answer:
A) 
Step-by-step explanation:
Area of a trapezoid is 
Answer:
70/3
Step-by-step explanation:
- Multiply: 23*3
- 23*3=69
- Add: 69+1
- 69+1=70
- 70/3
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Answer:
it is a 90 degree angle
Step-by-step explanation:
because the little square in the corner
