Please check my answers;
1.Which of the folowing is another representation of (-3,pi)?
(3,120degree)
(3,0 degree)I think it is this one??
((-3,0 degree)
2.Which is not a representation of (5,150 degree)
(-5,-30 degree)I think it is this one?
(-5,330 degree)
(5,510 degree)
3.Give 3 representations of (3,240 degree)One has to be in radians
My choices are: (3,600 degrees)
(3,-120 degree degree)
(-3,pi/3)
4.Give 3 representations of (-6,3pi/4)one has to be radians
I gave-(-6,495 degrees)
(-6,-225 degrees)
(6,-pi/4)
Let's go through your answers and check them:
1. Which of the following is another representation of (-3, pi)?
(a) (3, 120 degrees)
(b) (3, 0 degrees)
(c) (-3, 0 degrees)
The correct answer is (c) (-3, 0 degrees). You are correct.
2. Which is not a representation of (5, 150 degrees)?
(a) (-5, -30 degrees)
(b) (-5, 330 degrees)
(c) (5, 510 degrees)
The correct answer is (c) (5, 510 degrees). You are correct.
3. Give 3 representations of (3, 240 degrees). One has to be in radians.
(a) (3, 600 degrees)
(b) (3, -120 degrees)
(c) (-3, π/3)
You have one correct answer: (c) (-3, π/3). However, the other two answers are not correct. The correct answers could be: (3, -120 degrees) and (3, 4π/3 radians).
4. Give 3 representations of (-6, 3π/4). One has to be in radians.
You gave:
(a) (-6, 495 degrees)
(b) (-6, -225 degrees)
(c) (6, -π/4)
The first two answers are not correct. The correct answers could be: (-6, 405 degrees) and (-6, 5π/4 radians). The third answer you provided, (6, -π/4), is the correct representation.
Overall, you got some of the answers correct, but there were a few incorrect ones as well. Remember to pay attention to both the signs and the conversion between degrees and radians when representing coordinates.