Find the exact value using a double-angle identity.cos(90°)
A. 
B. 1
C. 0
D. 
Answer: C
Mathematics
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Provide an appropriate response.Find the direction in which the function is increasing most rapidly at the point P0.f(x, y, z) = x
, P0(1, 1, 1)
A. 
B. 
C. 
D. 
Mathematics
Test the equation for symmetry with respect to the given axis, line, or pole.r = 6 + 2 cos ?; the pole
A. Symmetric with respect to the pole
B.
| May or may not be symmetric with respect to the pole |
Mathematics
Solve the inequality. Express your answer using interval notation.-4x + 7 ? -5x + 2
A. (-?, -5)
B. (-?, -5]
C. [-5, ?)
D. (9, ?)
Mathematics
Find the value of the expression.
A. 
B. 
C. 
D. 
Mathematics