How do I rotate an object from a non-origin image point?

This is what I'm pretty much trying to achieve. The origin point and the axis to which the sprite rotates at need to be separate image points. How do I accomplish this? Can Pins be used if there's not a simple function?

Set X (DesiredX)+20*sin(Sprite.angle)

Set Y (DesiredY)-20*cos(Sprite.angle)

This example will make it rotate around a point 20 pixels below the origin. Hopefully you can adapt the concept to what you need.

What do I put in for DesiredX?

This could be a way to do it:

Just replace centerx/centery with the imagepoint x/y.

What do I put in for DesiredX?

Whatever position you want the object to take. Rojohound's solution is better, though.

This could be a way to do it:

Just replace centerx/centery with the imagepoint x/y.

Dear Rojohound,

I loved what you have shared here and it have helped a lot but i am not able to solve the same equation if i want rotation to be anti-clockwise.

i have replied to the post in the link you shared, i thought i was not clear there so i m posting here

can you please post an equation that would do the same but for anti-clockwise rotation

it would be a real help as my game mechanism depend completely on it.

Thank you in advance!

never mind ! got it! just had to change some angles to negative!