Complete the identity.(4 sin ? cos ?)(1 - 2 sin2 ?) = ?
A. 
B. sin (2?) + cos (2?)
C. sin (2?) cos (2?)
D. sin (4?)
Answer: D
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Solve the problem.Suppose that P dollars is invested in a savings account at an annual interest rate i, compounded monthly, for 2 months. The amount A in the account after 2 months is given by 
.Multiply this expression for A.
A. A = 
i2 + 
i + P
B. A = 
i2 + P
C. A = 
i2 + 
i + P
D. A = 
i2 + 
i + P
Determine whether the statement is true or false.If a triangle is a parallelogram, then all rectangles are squares.
A. True B. False
Given a series RC circuit, what is the relationship of R and XC at the frequency cutoff?
What will be an ideal response?
Write the appropriate rotation formulas so that in a rotated system the equation has no x'y'-term.4x2 + 5xy + 4y2 - 8x + 8y = 0
A. x = 
x' - 
y'; y = 
x' + 
y'
B. x = 
x' - 
y'; y = 
x' + 
y'
C. x = 
(x' - y'); y = 
(x' + y')
D. x = -y'; y = x'