Finding a Vector in Cartesian form

[Physics345]

Homework Statement

Find u→ in Cartesian form if u→ is a vector in the first quadrant, ∣u→∣=8 and the direction of u→ is 75° in standard position. Round each of the coordinates to one decimal place.

Homework Equations

none

The Attempt at a Solution

I'm certain this is correct, but some guy at the library told me it was wrong, can someone please confirm if it is wrong for me.

 

[DrClaude]

but some guy at the library told me it was wrong

Now you can say that some guy on the internet said it was right.

If the guy in the library didn't tell you why it was wrong, he wasn't of much help...

 

[Physics345]

Now you can say that some guy on the internet said it was right.

If the guy ion the library didn't tell you why it was wrong, he wasn't of much help...

He had an explanation I just couldn't understand it, I guess he just wanted to talk. I assumed he was correct since he was an older man he wouldn't bother making it up. I guess I should have known a most of the people in that library are either homeless or on drugs, no wondering it's being shut down. Anyways I thought I would double check and make sure I'm not missing something by asking the knowledgeable and wonderful people on here! Better safe than sorry. Thanks a lot Dr. Claude.