What are the values of cos α and tan α, if α is an acute angle in a right triangle: q1. Sin-a = 40/41

q2. sin-a = 4/5

What are the values of sin α and tan α, if α is an acute angle in a right triangle:

q3. cos-a = 15/17

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.

The half-life of a certain material is 0.004 second. approximately how much of a 20-gram sample will be left after 0.016 second? a. 5 grams b. 16 grams c. 0.32 gram d. 1.25 grams

Acertain drug is made from only two ingredients: compound a and compound b. there are 3 millimeters of compound a used for every 4 millimeters of compound b. if a chemist wants to make 693 milliliters of the drug, how many milliliters of compound a are needed?