It is -180*sqrt(3) = -311.77, approx.
+15 and -15.
They are 15 and -15
15 and -15
The square roots of 225 are +15 and -15 .
A positive eg -5 x -3 = +15
15. 15*15 = 225
It is 15, -15.
-15 15
273
3.8729x5.916=22.912
3, -15
A reciprocal is the number flipped and multiplied by a negative, so 15/1 as a reciprocal is -1/15.