Find the value of tan theta, if cos theta = 4/5 ; 0° < theta < 90° a. 3/-4
b. 3/4
c. 4/3
d. 4/-3

What is the rotational symmetry of a wheel

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.