. CDEF is a trapezium
1 answer:
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Answer:
11). x = 25.8°
12). x = 67.3°
Step-by-step explanation:
11). By using sine rule in the given triangle,
cos(x) =
cos(x) =
x =
x = 25.84
x ≈ 25.8°
12). By applying tangent rule in the given triangle,
tan(x) =
tan(x) =
x =
x = 67.29°
x ≈ 67.3°
Given:
The graphed point is (60,-20).
To find:
The ordered pair that would form a proportional relationship with the given point.
Solution:
If y is proportional to x, then
Where, k is the constant of proportionality.
For the given point,
For option (A),
For option (B),
For option (C),
.
The point (-30,10) gives the same value of the constant of proportionality. So, the point (-30,10) forms a proportional relationship with the given point.
Therefore, the correct option is C.
