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# Question Help watch

1. Find when these parametic curves cross the x and y axis:

1) x = 1 - cos(t) , y= sin(t)

2) x= sin(t) y=cos(t)^2

obviously you sub when x=0 and when y=0 in.
2. (Original post by Improvement)
Find when these parametic curves cross the x and y axis:

1) x = 1 - cos(t) , y= sin(t)

2) x= sin(t) y=cos(t)^2

obviously you sub when x=0 and when y=0 in.
Good job!
3. (Original post by Improvement)
Find when these parametic curves cross the x and y axis:

1) x = 1 - cos(t) , y= sin(t)

2) x= sin(t) y=cos(t)^2

obviously you sub when x=0 and when y=0 in.
Just rearrange and solve for t when x or y=0.
4. (Original post by B_9710)
Just rearrange and solve for t when x or y=0.
okay I have been trying that must of messing that up
5. (Original post by Improvement)
Find when these parametic curves cross the x and y axis:

1) x = 1 - cos(t) , y= sin(t)

2) x= sin(t) y=cos(t)^2

obviously you sub when x=0 and when y=0 in.
1) y-axis: x=0 so cos(t)=1 so t=0. y=sin(0)=0, so (0,0).
x-axis: y=0 so sin(t)=0 so t=0 or pi. Gives (0,0) and (2,0).

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