If cos A = 3/8, then what is the positive value of tan 1/2A, in simplest radical form with a rational denominator?

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.

How far could you drive on 50 gallons of gas

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.