The area of the trapezoid is 660 sq cm. Given the sides of 26 cm each and bases of 42 cm and 24 cm, find the height of the trape
1 answer:
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Answer:
b) (5, -3)
Step-by-step explanation:
The given equations are;
I prefer using substitution because of the first equation.
Put equation (1) into equation (2) to obtain;
We expand the parenthesis to obtain;
Group similar terms to get;
Simplify
Divide through by 5;
Put into equation (1) to get;
The solution is (5,-3).
The correct answer is B
Answer: 130.8 degrees
Explanation:
The problem can be solved by using the cosine theorem:
(1)
where
a,b,c are the lengths of the three sides of the triangle
is the angle between b and c
In this problem, we can identify a,b,c, with:
a = XZ = 11.05
b = XY = 6.32
c = YZ = 5.83
So, the angle corresponds to the angle m∠Y. Re-arranging eq.(1), we find
So, the angle is