Write the product as a sum or difference containing only sines or cosines.cos 
cos 
A. 
[cos(2?) + cos(3?)]
B. 
[cos(6?) - sin(4?)]
C. 
[cos(3?) - sin(2?)]
D. 
cos2(5?)
Answer: A
Mathematics
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Write expanded notation.1672
A. 2 thousands + 7 hundreds + 6 tens + 1 ones B. 1 hundreds + 7 tens + 6 ones C. 1 thousands + 6 hundreds + 7 tens + 2 ones D. 1672 thousands
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Write the fraction in simplest form.
A. 
B. 
C. 
D. 
Mathematics
Solve.4
= 
A. 
B. - 
C. 
D. - 
Mathematics
When solving a system of linear equations with the unknowns x, y, and z using the Gauss-Jordan elimination method, the following matrix was obtained. What can be concluded about the solution of the system?
What will be an ideal response?
Mathematics