Answer:
B
Step-by-step explanation:
The answer is obviously three.
For a 45 45 90 triangle if the legs are x length then the hyptonuse is x√2
a.
7=x
so hyptonuse=7√2 in
b.
sin(45°)=(√2)/2
c.
not sure what you need SAS for
but, area=1/2 times base times height
base=height=7
area=1/2 times 7 times 7=24.5 square inches
d. not sure, same as above?
15:33 10:22 60:132 are some