Answer: -ln |cos x| - ln |sin x| + C
<u>Step-by-step explanation:</u>

The 6 in 216 is in the ones place.
add 5 to -5 and 7.
That narrows it down to 2x =12
then you divide 2 to 2x and 12
Then its x = 6
so X = 6 !!!!!!
Answer:
15
Step-by-step explanation:
The first ratio is 1:3
12/36 = 3
So,
5 x 3 = 15