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