Cos(0)= 1
sin(0)= 0
tan(0)= 0
P.S I don’t have the degree symbol on my phone, sorry.
A; X = 60, Y = 150. I found the answers by dividing 300 into 2, and 6,750 into 45.
B; It's better to do per minute, since there's no need to divide back to find the original time.
Check the picture below.
make sure your calculator is in Degree mode.
the mirror is x*y square inches.