Which of the following graph indicates the graph of {(sin t, cos t): π/2 ≤ t ≤ 0} in xyplane ?
Which of the following graph indicates the graph of {(sin t, cos t): π/2 ≤ t ≤ 0} in xyplane ?
A. d
B. c
C. b
D. a
Answer : C. b
Explanation:

When t = 90 then (sin t, cos t) = (1,0)
When t=0 then (sin t, cos t) = (0,1)
Plot above two points in xy plane.