Cot (pi/2-x) / Cosx

**I know that the answer to the problem is tanxsecx, but how do you get to that answer?

A friend of yours is considering two providers of cell phone services. Provider A charges $120 per month for the service regardless of the number of phone calls made.

A bicycle store costs $3300 per month to operate. The store pays an average of $55 per bike. The average selling price of each bicycle is $115. How many bicycles must the store sell each month to break even?

If f (x) varies directly with x and f (x) = 4 when x=12 then what is the value of f (x) when x=60 A: 5 b: 20 C: 180 D: 300

The measure of BCE is 125° the measure of DCE is 42° what is the measure of BC E degrees

A survey of 100,000 adults found that 5% of Americans walk to work. Which of the following could be used to simulate the results of this survey and develop a margin of error? A. Take a spinner that has 20 sections and mark one section.

In a group of 21 students, 8 students take Art courses, 7 students take Music courses. Two students take both courses. A student is chosen randomly from this group. What is the probability that the student takes either Art or Music courses? 57

5% of what number is 63?

Find the sum of the "n" terms of the series: Sn=1²+3²+5² + ... + (2n-1) ²

Aimee's karate class last 1 hour and 15 minutes and is over at 5:00 pm. what time does Aimee's karate class start?

How many cups of orange juice would be needed to quadruple this recipe? Banana punch - 6 c water 4 c sugar 4 c bananas (mashed) 1/4 c. lemon juice 46 fl oz pineapple juice 6 fl oz orange juice 4 qt ginger ale