Can someone please help me with these two questions?
1 answer:
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Answer:
Therefore,
The Central Angle is 48°.
Step-by-step explanation:
Given:
Circumference = 12 units
To Find:
Central angle = θ = ?
Solution:
If "θ" the central angle is in degree then arc of length is given by
Substituting the values we get
Therefore,
The Central Angle is 48°.
Answer:
x=-1/85; y=-283/85; z=2/17
Step-by-step explanation:
Using an algebraic method like elimination or substitution would take a lot of steps which could lead to mistake the calculations. In this case, I decided to use the Gaussian elimination. We can express the system in matrix form as follows:
To begin the calculations, we write the system in augmented matrix form and use the Gaussian elimination:
By applying the Gaussian elimination, the final matrix is the following:
In order to verify the results, it´s enough to substitute the calculated values in the original equations to see if the equalities are correct. Here you can see the verification for all of the equations: