Remember
(x^m)/(x^n)=x^(m-n)
7^16/6^12=7^(16-12)=6=7^4
so
7^4=7^-18/?
?=7^?
7^4=7^-18/7^?
7^-18/7^?=7^(-18-?)=7^4
-18-?=4
add 18
-?=22
tmes -1
?=-22
7^-22
answer is C
Step-by-step explanation:
1. secx / cscx
2. sinx /cosx
The quotient is 340 I know because I divided I changed .25 to 25 and changed 85 to 8500 then divided