Verify the identity.cos2 
= 
What will be an ideal response?
cos2 
= 
2 = 
= 
? 
= 
= 
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Perform the indicated operation.The distance between the point (0, 0) and the point (x,y) is 
in a rectangular coordinate grid. Calculate the distance between the point (0, 0) and the point (2, 2), rounded to two decimal places.
A. 2.45 B. 2.83 C. 4.00 D. 2.00
Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation.r = 2 cos ?
A. x2 + (y + 1)2 = 1; circle, radius 1,
center at (0, -1) in rectangular
coordinates
B. x2 + (y - 1)2 = 1; circle, radius 1,
center at (0, 1) in rectangular
coordinates
C. (x + 1)2 + y2 = 1; circle, radius 1,
center at (-1, 0) in rectangular
coordinates
D. (x - 1)2 + y2 = 1; circle, radius 1,
center at (1, 0) in rectangular
coordinates
Solve the problem.A game is played with red and blue tokens. If each red token represents -1 point and each blue token represents +1 point, what is the total point value of 18 red tokens and 17 blue tokens?
A. 1 B. -35 C. -1 D. 35
Factor the trinomial, if possible.4x3 + 8x2 - 60x
A. 4x(x - 3)(x + 5) B. (4x2 + 12x)(x - 5) C. 4x(x + 3)(x - 5) D. (x - 3)(4x2 + 20)