Solve the equation on the interval 0 ? ? < 2?.cos2 ? - 1 = 0
A. 
B. {0}
C. {0, ?}
D. 
Answer: C
You might also like to view...
Solve the system by the elimination method. x - 5y = 20-7x - 4y = 16
A. {(1, -5)} B. {(0, -4)} C. ? D. {(4, 0)}
Which method should be used to solve the system? Explain your answer, including a description of the first step. x2 - 7y2 = 910x2 + 9y2 = 100
What will be an ideal response?
Find the slope and y-intercept of the line.y = 
x + 1
A. slope = 2; y-intercept = - 1
B. slope = - 
; y-intercept = - 1
C. slope = 
; y-intercept = 1
D. slope = 1; y-intercept = 
Solve triangle ABC. If necessary, round the answer to the nearest tenth.B = 12.8°, C = 113.5°, b = 19.2 inches
A. A = 51.7°, a = 79.5 in., c = 69.8 in. B. A = 53.7°, a = 71.80 in., c = 81.50 in. C. A = 53.7°, a = 69.8 in., c = 79.5 in. D. A = 51.7°, a = 81.50 in., c = 71.80 in.