ElectricPavlov

Here are some starters....it is a right triangle so one angle is 90   one is 48 (given) and the other is  180-90-48= 42

Sin 48 = 9/x  (opposite over hypot)

Can you take it from there?     (Once you calc hyp, you should be able to calc the other leg...a couple of ways)

Thanx for the correction Chris.....   '1' by the definition is not considered a prime number.

10.8 / (-9) = - 1.2 = c

All of the integers >= 1 that have only 2 divisors...1  and the number itself    1 3 5     19   23       83   etc etc   (there are lots in between my examples)

4  5/6   x  2  2/3   = 12.888 inches  (232/18)     116/9    12 8/9ths inches

Geometric series with common ratio of 5    62.5 x 5 = 312.5

Use the littl +-   key right next to zero key

2 d^2 = 162    divide both sides by 2

d^2 = 81         sqrt both sides

d=9  (or -9)

THAT is the equation of a line in the form y=mx +b   (where b = 0)  and the slope is -4/5

sin^2(theta)