- #1

- 45

- 0

So thats the problem.

All I got so far is

r1(t)=t(i)+t^2(j)+t^3(k)

r2(t)=sint(i)+sin 2t(j)+t(k)

Now I'm stuck. I'm not sure where to go now.

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter Juntao
- Start date

- #1

- 45

- 0

So thats the problem.

All I got so far is

r1(t)=t(i)+t^2(j)+t^3(k)

r2(t)=sint(i)+sin 2t(j)+t(k)

Now I'm stuck. I'm not sure where to go now.

- #2

- 362

- 0

Now how do you find the angle f between two vectors?

A*B=ABcosf

1=(1)sqrt(6)cosf

f=arccos(sqrt(6)/6)=66 degrees

- #3

HallsofIvy

Science Advisor

Homework Helper

- 41,847

- 966

- #4

- 362

- 0

I interpreted, "Don't go off on a tangent" to mean "Tangents aren't the way to solve the problem."

- #5

- 45

- 0

Great. My answer matched yours.

Share: