Sunday

February 1, 2015

February 1, 2015

Posted by **Anonymous** on Monday, October 26, 2009 at 4:42pm.

- advanced functions -
**MathMate**, Monday, October 26, 2009 at 5:16pmDiameter of the moon = 3480 km

Distance from surface of the earth

= Distance to centre - radius of the earth

= 384400-6400 km

= 378000 km

Since the angle is very small, we can approximate the arc-length by the chord length, equal to the diameter.

Angle subtended

= 3480/378000

= 0.0092 radian

If we had used the chord instead, the difference in angle calculated would have been 0.0000000325 radians more.

i.e.

angle

= 2*sin^{-1}(1740/37800)

= 0.0092 radian

- advanced functions -
**Eric**, Tuesday, May 22, 2012 at 11:08pmSorry, I actually have a question. According to the question that was posted. If I were to solve this question, without knowing the radius of the earth before hand. Is there any other solution??

**Answer this Question**

**Related Questions**

Algebra - The diameter of the moon is about 3476 kilometers. The distance from ...

math - The Moon orbits Earth every 27.3 days. Determine the angular velocity of ...

Physics - You are flying to the Moon. Find the point at which the gravitational ...

Physics - The average distance separating Earth and the Moon (center to center) ...

AP Physics (circular motion) - The moon revolves about the Earth in a trajectory...

physics - Moon is a natural satellite of the Earth, circling it with period (...

Physics - The mass of the Moon is 7.35x10 to the 22nd Kg. At some point between ...

Science - Do you know how big the Sun is? The Sun is 400 times as big as the ...

science - The pull of gravity keeps the Moon in orbit around Earth. The distance...

physics - 15000N on earth 2250N on moon Moon Radius= 1.74x10^6m Orbital Height ...