Use a product-to-sum identity to rewrite the expression.sin(4t) sin(2t)
A. 0.5(sin(6t) + sin(2t))
B. 0.5(cos(2t) - cos(6t))
C. 0.5(cos(6t) + cos(2t))
D. 0.5(sin(6t) - sin(2t))
Answer: B
You might also like to view...
Solve the absolute value equation.
= 0
A. {-4, 0} B. {-4, 4} C. {0} D. {0, 4}
Use the rational zero theorem, Descartes's rule of signs, and the theorem on bounds as aids in finding all real and imaginary roots to the equation.x3 + 6x2 - 3x - 18 = 0
A. -6, -3, 3
B. -6, -
, 
C. -
, multiplicity 2; -3
D. -
, multiplicity 2; -
, multiplicity 2
Solve the problem.To convert a temperature C given in degrees Celsius to an equivalent temperature F in degrees Fahrenheit, use the formula F = 
+ 32. Find the Fahrenheit temperature that is equivalent to a temperature of 
A. 473°F B. 409°F C. 119°F D. 155°F
Solve the problem.Ace Cable charges $27 for the basic service plus $8 for each movie channel. Let f(x) be the total cost, in dollars, of subscribing to Ace Cable and including x movie channels. Write a formula for f(x).
A. f(x) = 8x - 27 B. f(x) = 27x + 8 C. f(x) = 27x - 8 D. f(x) = 8x + 27