I have calculated the two forces but I have managed to get the wrong answer for the angle. Please see my workings below in the attached file and inform me of the correct answer please.

I have calculated the two forces but I have managed to get the wrong answer for the angle. Please see my workings below and inform me of the correct answer please.

I have calculated the two forces but I have managed to get the wrong answer for the angle. Please see my workings below in the attached file and inform me of the correct answer please. 1

I have calculated the two forces but I have managed to get the wrong answer for the angle. Please see my workings below in the attached file and inform me of the correct answer please. 2