Answer:
C
Step-by-step explanation:
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)
I think that the answer is a increase
Multiply the second fraction by two; which gets you 5/10 + 2/10 = 7/10
Number ten is 60 73+36=108
