1.cot^2x+sec^2x=tan^2x+csc^2x
2.cos3x=4cos^3x-3cosx
Can someone help guide me towards the answer but not actually give me the full solution to the answer. Thanks
K I'm not really sure how to show what I mean without solving it. This a long way but I thought I show you a different way to work the problem.
Another way to see if the RHS is equal to the LHS is