90 divided b 13 = 6.923076923076923
6.9231
6.9231
90-13 = 77 degrees.
-13
Because 90 degrees is half of a straight line. A straight line is equal to 180 degrees. 180 divided by 2 = 90.
An acute angle would be 13 degrees. This is because the angle measurement does not exceed 90. Anything below 90 degrees is "acute" while anything above 90 is "obtuse".
45 degrees, because a right angle is 90 degrees. 90 divided by 2 is 45.
Yes, because a whole turn is 360 degrees and 360 divided by four is 90!
Depends on how you count it. If you take it as 90 degrees north and 90 degrees south, that's 180 degrees of latitude. Looking at just one hemisphere, then just 90 degrees will do it.
pi divided by 2
90/4 = 22.5 degrees.