Which function is undefined when theta=pi/2 radians? cos theta cot theta csc theta tan theta

tan ∅ and cot ∅

tan ∅ is undefined for ∅ =

and since cot ∅ = 1/ tan ∅ then cot ∅ is also undefined for ∅ =

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x