Establish the identity.(1 - cos x)(1 + cos x) = sin2x
What will be an ideal response?
(1 - cos x)(1 + cos x) = 1 - cos2x = sin2x
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Provide an appropriate response.Which of the statements below is true?A: If (r1, ?1) and (r2, ?2) represent the same point in polar coordinates, then 
B: If (r1, ?1) and (r2, ?2) represent the same point in polar coordinates, then 
for some integer n.
A. A only B. Neither A nor B C. Both A and B D. B only
Find the focus and the directrix of the parabola.y = 3x2 + 18x + 29
A. Focus: 
; directrix: y = 
B. Focus: (-3, 5); directrix: x = -1
C. Focus: 
; directrix: y = 
D. Focus: (-3, 14); directrix: x = 10
Solve the problem.Which pair of numbers whose sum is 72 has the largest product?
A. 35 and 37 B. 36 and 36 C. 30 and 42 D. 26 and 46
Find the intercepts of the function f(x).f(x) = -x2(x + 5)(x2 + 1)
A. x-intercepts: -5, 0; y-intercept: 0 B. x-intercepts: -5, -1, 0; y-intercept: -5 C. x-intercepts: -5, -1, 0; y-intercept: 5 D. x-intercepts: -5, -1, 0, 1; y-intercept: 0