Check all that apply. (there are three answers) if tanθ = 15/8, then:
a. secθ = 17/8
b. cosθ = 15/17
c. cotθ = 8/15
d. cscθ = 17/15
i have no idea how to figure this out, if anyone can give a step by step explanation, that would be great! i know c is correct because cotangent is the opposite of tangent and that means that if tangent is 15/8 then the cotangent would be 8/15. but how do i figure out which of the other choices are equivalent?

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.