Question

b. Measure and record the smallest angle i. An object K and an observer at X are formed between lines C and D at E. shown below. Draw a line indicating a line of sight to an object L that lies 35° below object K on the plane of the paper as viewed by the observer at X. c. Based upon the diagram, what is the angle formed at point G between points F and H? j. Below is shown a top view of part of the solar system with the location of certain planets. Based on this drawing, what is the angular separation between the sun and Mars as viewed from the earth? d. Which letter of part c marks the vertex of the angle? e. Draw a line perpendicular, forming a 90 angle, to the horizontal line shown above in part c at the position marked G t. Draw in the lines of sight and determine what is the angle formed at point X be- tween points I and J Mars earth Venus g. In the illustration below draw the lines of sight to each star from the observer's head, and measure and indicate the angular separation seen by the observer for the two stars. (Assume the stars and observer lie in plane of the page) k. Repeat the same approach as in part for the planet Venus. 2 Another application of angular measurement in astronomy is measuring apparent angular size of celestial objects. Complete the follow- ing parts a fof this question. a, Hold a large coin, such as a quarter or half dollar, at arms length and position your- self so that it just covers an object in your field of view. Now move the coin toward your eye, does the apparent angular size of h. Is t likely that two stars will have the same apparent angular separation as viewed by an observer on two different planets orbiting different stars? Explain. the coin inerease or decrease? b. Standing in the same position as in part a, hold a smaller coin at arms length. Adjust the coins distance from your eye i il

Answer 1