you multiply 19.95 by 3 and you get 59.85 then you figure out how many hours are from 9 am to 9 pm which was 12 then you multiply that by 6 then you take 59.85 and multiply that by 72 then you multiply that by 7
1 ) cot x * sin x = cos x (cos x / sin x) * sin x = cos x cos x = cos x Answer: B ) cot x = cos x / sin x 2 ) ( sin² x + cos² x ) / cos x = sec x 1/cos x = sec x sec x = sec x Answer: C ) cos² x + sin² x = 1
