Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 22.5°
A. 
B. - 
C. - 
D. 
Answer: A
Mathematics
You might also like to view...
The following table shows the running speed R, in centimeters per second, of ants as a function of the temperature T in degrees Celsius. Use linear regression to model running speed as a function of temperature. ? T 25.6 30.3 32.3 34.8 R 2.21 3.43 4.76 5.39? ?
A. 
B. 
C. 
D. 
Mathematics
Evaluate the integral.
A. - 
B. 
C. 
-
D. - 
Mathematics
Solve the problem.The perimeter of a rectangle is 34 cm. The length is 7 cm longer than the width. What are the length and width of the rectangle?
A. Length: 13 cm; width: 6 cm B. Length: 12 cm; width: 5 cm C. Length: 17 cm; width: 10 cm D. Length: 7 cm; width: 5 cm
Mathematics
Write the first four terms of the sequence whose general term is given.an = 
A. 
, 
, 
, 
B. 3, 
, 
, 
C. 1, 
, 
, 
D. 1, 
, 
, 
Mathematics