Establish the identity.sin 4u = 2 sin 2u cos 2u
What will be an ideal response?
sin 4u = sin (2u + 2u) = 2 sin 2u cos 2u.
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Solve.Mike and Carrie are in the 28% marginal tax bracket and claim the standard deduction. How much will their tax bill be reduced if they qualify for a $900 tax credit?
A. $1152.00 B. $900 C. $252.00 D. $430.00
Establish the identity.cos 3x = cos3 x - 3 sin2 x cos x
What will be an ideal response?
Complete the identity.
= ?
A. cot (6?) B. 0 C. tan (3?) tan (6?) D. -tan (6?)
Simplify the expression.2 cos2 4x - 1
A. 2 sin 4x
B. cos 8x
C. cos 4x
D. 
sin 16x