Use the fundamental identities to simplify the expression.sin2? + tan2? + cos2?
A. sec2?
B. tan2?
C. sin ?
D. cos3?
Answer: A
Mathematics
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 6 cos t + 2 cos 3t, y = 6 sin t - 2 sin3t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
For the given parabola, use the discriminant to determine the number of x-intercepts.y = 4x2 + 8x + 4
A. no x-intercepts B. two x-intercept C. one x-intercept
Mathematics
Graph the linear equation.y = 
x - 4
A. 
B. 
C. 
D. 
Mathematics
Give the center and radius of the circle. Then sketch its graph.(x - 4)2 + (y - 2)2 = 4
A. center (- 4, 2), r = 2
B. center (- 4, - 2), r = 2
C. center (4, - 2), r = 2
D. center (4, 2), r = 2
Mathematics