Hi! you can find the square root of a number with out a cauclater is to see if you can get to a whole number by squaring smaller numbers or multiplying a smaller number by it self.
The probability of the 8th roll being odd would still be 1/2 the first seven rolls won't change anything
Answer:
80=X
95=X
55=X
30=X
you simply add the numbers you have together then subtract that from 180
Here is a general rule for sin and cos
sin x = cos (90 - x)
cos x = sin (90 - x)
These rules are complementary, so for your problem
cos 75 = sin (90 - 75) = sin 15 as your answer.
