Q. What is the value of the function (usinf principle value branch)
ix)
Kindly refer the similar link for your query.
https://www.meritnation.com/ask-answer/question/cos-cos-1-root3-2-pi-4/inverse-trigonometric-functions/4663334
Regards
https://www.meritnation.com/ask-answer/question/cos-cos-1-root3-2-pi-4/inverse-trigonometric-functions/4663334
Regards