   Chapter 34, Problem 19PE

Chapter
Section
Textbook Problem

Distances to the nearest stars (up to 500 by away) can be measured by a technique called parallax, as shown in Figure 34.26. What are the angles θ 1 and θ 2 relative to the plane of the Earth’s orbit for a star 4.0 by directly above the Sun? To determine

The angles θ1 and θ2 relative to the plane of the Earth's orbit.

Explanation

Given:

The given figure is shown below.

Length of perpendicular = 4ly

Length of Base = 1.58×10-5 ly

Formula Used:

θ1=θ2= tan-1(Perpendicularbase)

Calculation:

Consider θ1 and θ2 are equal,

Substituting the values in above equation we get,

θ

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