2001 gallons used in 5 days, so the average for one day is 2001/5=400.2 gallons.
Answer:
x = 7°
Step-by-step explanation:
3x° - 53° = x° + 67°
2x° = 14°
x° = 7°
Cos(2x) = cos^2(x) - sin^2(x) - cos(x)
but sin^2(x) = 1 - cos^2(x)
cos(2x) - cos(x) = cos^2(x) - (1 - cos^2(x) ) - cos(x)
cos(2x) - cos(x) = cos^2(x) - 1 + cos^2(x) - cos(x)
cos(2x) - cos(x) = 2cos^2(x) - 1 - cos(x)
cos(2x) - cos(x) = (2cos(x) + 1)(cos(x) - 1)
I think this is what you have asked for.
Answer:
Step-by-step explanation:
