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# How to calculate parallax? watch

1. There's an equation in my notes that says distance=AB/angle but when I substitute the values into the equation the answer is wrong. d=(2000x10^3) divided by 0.3. The answer is supposed to be D.
2. (Original post by Airess3)

There's an equation in my notes that says distance=AB/angle but when I substitute the values into the equation the answer is wrong. d=(2000x10^3) divided by 0.3. The answer is supposed to be D.
Remember when using for the arc length, is in radians!
3. (Original post by Phichi)
Remember when using for the arc length, is in radians!
Still doesn't give me the right answer...I did 2000 divided by (0.3 x pi/180). Then doubled r, but still the wrong answer.
4. (Original post by Airess3)
Still doesn't give me the right answer...I did 2000 divided by (0.3 x pi/180). Then doubled r, but still the wrong answer.
You're doing something wrong.

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