Use cosine rule:
c²=b²+a²-2ba cosC
Right triangle = 90 degrees
cosine 90 degrees = 0
c²=28²+15²-2×28×15×0
c²=28²+15²
c=√1009
c=31.8 in
First term(a)=2
D=8
Now
t13=a*12D
=2*12*8=192
Answer= 192
<span>B. 1/2 i hope this helps you out</span>
The answer is C! I took the test and passed
Answer:
2,0
Step-by-step explanation:
