Find the exact value of the expression if ? = 30°. Do not use a calculator.g(?) = cos ?Find g(2?).
A. 
B. 
C. 
D. 1
Answer: C
Mathematics
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Identify the equation as a parabola, circle, ellipse, or hyperbola.4x2 = 16y2 + 64
A. Hyperbola B. Parabola C. Ellipse D. Circle
Mathematics
Find an equation for the graph.
A. y = 3 cos (4x)
B. y = 4 cos (3x)
C. y = 3 cos 
D. y = 4 cos 
Mathematics
Solve the equation.3 + 2(4n - 1) = 57
A. 8
B. 7
C. 
D. 
Mathematics
Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = - 
x2 + 3x - 4
A. Increasing on 
; decreasing on 
B. Increasing on 
; decreasing on 
C. Increasing on 
; decreasing on 
D. Increasing on 
; decreasing on 
Mathematics