Find the exact value of the expression.cos (165°) cos (45°) + sin (165°) sin (45°)
A. -2
B. - 
C. - 
D. - 
Answer: D
Mathematics
You might also like to view...
Plot the graph of the regression line for the following table of values. x 1.38 3.5 4.75 6.23 y 7.14 11.23 13.78 17.39
What will be an ideal response?
Mathematics
Graph the curve over the given interval together with its tangent at the given value of x. Graph the tangent with a dashed line.y = cos(x), -2? ? x ? 2?, x = 
A. 
B. 
C. 
D. 
Mathematics
Change the base ten number to a number in the base indicated.Write 2222 in base sixteen.
A. 8EA16 B. 8AE16 C. 8AE D. 8EA
Mathematics
Convert.600 seconds = minutes
A. 25 B. 10 C. 5 D. 18
Mathematics