Use the identities for the cosine of a sum or a difference to write the expression as a single function of ?.cos (? - 270°)
A. -sin ?
B. -cos ?
C. sin ?
D. cos ?
Answer: A
You might also like to view...
Solve the problem.Stephanie is a waitress and she is paid $2.60 per hour plus 15% of the total cost of the food and beverages she serves. If during a 5-hour shift she earns $200, what was the total cost of the food and beverages she served?
A. $1246.67 B. $162.61 C. $1420.00 D. $220.00
Determine whether the set of vectors is orthogonal.
, 
, 
A. Yes B. No
Use Cramer's rule to solve the system of linear equations in two variables.
A. (-4, -3) B. (-3, 4) C. (3, -4) D. (4, -3)
Provide an appropriate response.Write an equation that requires the use of the multiplication property of equality, where both sides must be multiplied by 
and where the solution is a negative number.
What will be an ideal response?