Use an identity to write the expression as a single trigonometric function or as a single number.2 cos2 22.5° - 1
A. 
B. 
C. 
D. 
Answer: D
Mathematics
You might also like to view...
Answer the question.Is this statement true or false? Why?(3 - 3) - 3 = 3 - (3 - 3)
What will be an ideal response?
Mathematics
Use the given slope and coordinate of the y-intercept to write the equation of the line in slope-intercept form.m = 
; (0, 1)
A. y = - 
x - 1
B. y = 
x + 1
C. y = 
x - 1
D. y = - 
x + 1
Mathematics
Find the part.160% of 4110 colleges
A. 657,600 colleges B. 6576 colleges C. 658 colleges D. 65,760 colleges
Mathematics
Determine the slope and the y-intercept of the graph of the equation.-x + 7y - 56 = 0
A. m = 
; (0, 8)
B. m = 7; (0, -56)
C. m = - 
; (0, 8)
D. m = -1; (0, 56)
Mathematics