-9-(-12)=-9+12=3
-9-12=-9+(-12)=-21
C obtuse scalene
Source:
http://www.1728.org/triang.htm
Sin404 = sin(360 + 44)
as sin(360 + α) = sinα
= sin44
Answer:
Point B is at (3,3)
Step-by-step explanation:
the mid point is (2,5) and A is at (1,7)
first find the slope:
y1 - y2/x1 - x2
7 - 5/1 - 2
2/-1
-2/1
then go down 2 units and right 1 unit from (2,5):
(2 + 1, 5 - 2) => (3,3)