Pls hurry I’m being timed

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

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

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)