The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

How to calculate parallax?

20150512_204020.jpg

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.
Reply 1
Avatar for Phichi
Phichi
11
Original post by Airess3
20150512_204020.jpg

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 s=rθ s = r\theta for the arc length, θ\theta is in radians!
Original post by Phichi
Remember when using s=rθ s = r\theta for the arc length, θ\theta 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.
Reply 3
Avatar for Phichi
Phichi
11
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.

2000(0.3π180)=381972≈3.82×105  km\dfrac{2000}{\left(\dfrac{0.3\pi}{180}\right)} = 381972 \approx 3.82\times 10^5 \, \,km

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you