Cosx=4/5 what is sin2x cos2x and tan2x

What are correct trigonometric ratios that could be used to determine the length of ln

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?