Use an identity to write the expression as a single trigonometric function or as a single number.2 cos24x - 1
A. cos 4x
B. 2 sin 4x
C. 
sin 16x
D. cos 8x
Answer: D
Mathematics
You might also like to view...
Subtract.(5x2y + 2xy) - (3x2y - 5xy2) - (4xy - 5xy2)
A. 7x2y + 5xy2 - 2xy B. 2x2y + 10xy2 - 2xy C. 2x2y - 10xy2 - 2xy D. 2x2y - 10xy2 + 6xy
Mathematics
Solve the problem.A triangular flag measures 
in. along the base and has a perpendicular length of 
in. How much cloth is needed to make the flag?
A. 9
in.2
B. 9
in.2
C. 36
in.2
D. 18
in.2
Mathematics
Express the number in scientific notation.0.0000000307015
A. 3.07015 × 10-8 B. 3.07015 × 10-9 C. 3.07015 × 10-7 D. 3.07015 × 108
Mathematics
Find the center (h, k) and the radius r of the circle. Graph the circle.x2 + y2 - 2x - 4y + 1 = 0
A. (h, k) = (-1, -2); r = 2
B. (h, k) = (1, 2); r = 2
C. (h, k) = (1, 2); r = 4
D. (h, k) = (-1, -2); r = 4
Mathematics