If four angles

a) 31
b) 30
c) 149
d) 180

Ineed if you could explain and give me the answer you! this needs done

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

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