Question

Really need the answer, please help! The polar coordinates (8, 7π/4) represent the Cartesian point
a. (4, 4)
b. (4√2, 4√2)
c. (-4√2, 4√2)
d. (4√2, -4√2)

Answer 1

what degree does 7pi/4 represent?

Answer 2

or, if you can visuallize the radian better ... then just draw a unit circle with that angle

Answer 3

if you can visuallize where the angle ends up, you can match that quadrant to the options given ...