2880. What you do is you set this problem up as a proportion. So you do 4/5= x/3600. You then cross multiply and divide.
The answer is letter B.
Here's how to evaluate the expression. Open the attached file.
Step-by-step explanation:
c²=24²+45²=2601
so c=51
add the 2 angles: 89+80= 169
subtract 180-169= 11
11° is the measurement of the final angle
do sin(80)=12/x
x(sin(80))=12
plug in on calculator:
x=12/(sin(80))
Answer:
52.63
Step-by-step explanation:
