Answer:
AB = 5cm
AC = 12cm
BC = 13cm
A = 90 deg
B= arctan(AC/AB)=arctan(12/5) =67.38 deg
C=arctan(AB/AC) =arctan(5/12) = 22.62 deg
Angle R is congruent to Angle Y
Side QR is congruent to side XY
The sum of the exterior angles is always 360 degs.
360/90 = 4
Step-by-step explanation:
8. Simple random sample
9. Stratified Sample
10. Convenience Sample