Question

dd

Answer 1

@campbell_st

Answer 2

@sweetburger

Answer 3

am i right?:

Answer 4

@imqwerty @legomyego180

Answer 5

@AAbomosalam1998

Answer 6

did i get these 2 questions right?

Answer 7

For the first question I think I would have chosen D but im not 100% sure.
Whats the reasoning for the +1 after the 2pi*n?

Answer 8

Second question is correct

Answer 9

ill go with D then

Answer 10

i was considering that too

Answer 11

aw it was C

Answer 12

oh well.. thank you!!!

Answer 13

for the first one
\[x=r \cos \theta ,y=r \sin \theta \]
\[x=-3\cos \frac{ 5 \pi }{ 3 }=-3\cos \left( 2 \pi -\frac{ \pi }{ 3 } \right)=-3\cos \frac{ \pi }{ 3 }=-3*\frac{1 }{ 2 }=-\frac{ 3 }{ 2 }\]
\[y=-3\sin \frac{ 5 \pi }{ 3 }=-3\sin \left( 2 \pi-\frac{ \pi }{ 3 } \right)=-3\left( -\sin \frac{ \pi }{ 3 } \right)=3*\frac{ \sqrt{3} }{ 2 }\]