Use the diagram to identify the special angle pairs. ADC and BDC are . A pair of complementary angles is angles .
2 answers:
Answer:
- A pair of complementary angles is angles ACD and DCB.
Step-by-step explanation:
<u>Definitions</u>
- Two or more angles are supplementary if they add up to 180 degrees.
- Two or more angles are complementary if they add up to 90 degrees.
In the diagram which is attached below:
Angles ADC are BDC are on a straight line, and they add up to 180 degrees.
Therefore:
Furthermore,
A pair of complementary angles is angles ACD and DCB.
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Answer:
Step-by-step explanation:
To find the matrix A, took all the numeric coefficient of the variables, the first column is for x, the second column for y, the third column for z and the last column for w:
And the vector B is formed with the solution of each equation of the system:
To apply the Cramer's rule, take the matrix A and replace the column assigned to the variable that you need to solve with the vector b, in this case, that would be the second column. This new matrix is going to be called .
The value of y using Cramer's rule is:
Find the value of the determinant of each matrix, and divide: