Answer:
The answer to your question is the letter C
I think it is c
Step-by-step explanation:
C
cot =cos/sin =a/b
cos=a/b*sin
(sin-cos)/(sin+cos) =(sin-sin*a/b)(sin+sin*a/b)
=(1-a/b)/(a+a/b)
=(b-a)/(a+b)
Answer: 8 ft
<u>Step-by-step explanation:</u>
$4
b
