We have to find the exact value of: arc cos ( sin ( π /6 ) ).
We know that:
sin ( π/6 ) = sin 30° = 1/2
Arc cos is the inverse function of cosine.
arc cos ( 1/2 ) = 60° = π/3
ANSWER:
A diagonal fold which runs from the bottom-left corner to the top-right corner.
This would be the angle bisector of XAB as it would run directly through the centre of the angle, thus bisecting it.
I have attached an image which visually represents this. The blue lines are meant to be the angle XAB while the red line is the diagonal fold / angle bisector.
Hope this helps! <3
The correct answer is D because you would multiply the numbers in the bracket by 6 which would equal to 30