What is the value of x in the equation

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Find cot x if sin x cot x csc x = √2

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes. she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?