Need help for question on Friction

[Daisy]

Homework Statement

So that is the question.

Homework Equations

The relevant equations I've used are:

Ff=μN

Ff=μkmgcosθ

The Attempt at a Solution

I don't even know what Ff is? I believe this question involves using toa, cah, soh, but i really am confused about how i should go about with it. :( Can somebody please help me?

 

[NascentOxygen]

The problem statement provides a good deal more information than is required to answer the question. Can you identify the minimum data that is needed to answer the question?

If you don't know what Ff is, then you had better refer to your class notes to learn what Ff is.

 

[Satvik Pandey]

I don't even know what Ff is? I believe this question involves using toa, cah, soh, but i really am confused about how i should go about with it. :( Can somebody please help me?

Hi Daisy.Welcome to Physics forum.
I have made a figure for you.Please have a look here.

From this figure resolve mg on X and Y axis then use Newton's second law in Y direction.
And from formula F_f =μR you can find frictional force.