Use even and odd properties of the trigonometric functions to find the exact value of the expression.cos
A. - 
B. 
C. - 
D. - 
Answer: A
Mathematics
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Provide an appropriate response.Give the number of solutions for ?ax + b? = k if k < 0.
A. 2 B. an infinite number C. 0 D. 1
Mathematics
State whether the vectors are parallel, orthogonal, or neither.v = i + 
j,
w = i - 4j
A. Orthogonal B. Parallel C. Neither
Mathematics
Subtract.-15 - (-6)
A. 21 B. -21 C. 9 D. -9
Mathematics
Solve the problem.Let A = 
and B = 
. Find 2A + B.
A. 
B. 
C. 
D. 
Mathematics