Rewrite the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the trigonometric expression without the use of a calculator.2 sin 112.5° cos 112.5°
A. - 
B. 
C. 
D. - 
Answer: D
Mathematics
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Determine whether the function is odd, even, or neither.f(?) = 1 + sin2 ?
A. Odd B. Neither C. Even
Mathematics
Change the given polar coordinates (r, ?) to Cartesian coordinates (x, y).
A. (-8, -8
)
B. (8, -8
)
C. (-8
, -8)
D. (8
, -8)
Mathematics
Solve the equation.|5m + 4| = 9
A. 1, - 
B. - 1, 
C. 
, - 
D. empty set
Mathematics
Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value.f(x) = 3x2 - 2x + 2
A. maximum; 
B. maximum; 
C. minimum; 
D. minimum; 
Mathematics