PPT-8.4 Angles of Elevation and Depression

Angle of Elevation the angle formed by a horizontal line and a line of sight to a point above the line Angle of Depression the angle formed by a horizontal line and a line of sight to a point below the line. angle. Find the ground distance from the blimp to the person.. 265.0 ft. vertical. 424.0 ft. horizontal. A chair lift on a ski slope has an angle of elevation of and covers a diagonal distance of 4040 feet. To the nearest foot, what is the vertical height covered by the chair lift?. Skills Check. Sin-Cosine. Cofunction. The Sin-Cosine . Cofunction. 1. What is sin A?. 2. What is Cos C?. 3. What is Sin Z?. 4. What is Cos X?. 5. Sin 28 = ?. 6. . Cos 10 = ?. 7. . ABC where B = 90.. Elevation and Depression . زوايا الأرتفاع والانخفاض. eye - level. eye - level. eye - level. eye - level. eye - level. eye - level. eye - level. eye - level. eye - level. eye - level. Depression. 1/14 and 1/15. EQ: . How do we draw . angles of elevation and angles of . depression. ?. Agenda:. Warm Up/Check Homework. Notes . on Angles of Elevation and . Depression. Practice Drawings. Angle of Elevation. : the angle from the line of sight and upwards.. . Angle of Elevation. Angle of Depression. : the angle from the line of sight and downwards.. . . Angle of Depression. Angles of Elevation and Depression. into the folder on the projector podium. Have Worksheet and Notes out on your desk. Work on p. 510 #1 – 7. Bellringer. SPI 3108.4.15 Determine and use the appropriate trigonometric ratio for a right triangle to solve a contextual problem.. The vertical distance from rotary table to Point B is called a true vertical depth. The inclination angle ‘I’ is the angle between vertical and the wellbore. . The direction angle ‘A’ is specified as the azimuth between the geographic north and the projection of a wellbore on a horizontal plane.. -Quiz Friday over Pythagorean Theorem/Special Right Triangles/Trig Ratios.. Theodolite/diopter . Inclinometer / Clinometer. Sextant – used to measure the angle between two known objects, usually using a celestial object such as the sun or Polaris (north star). The major use is to identify lines of latitude and sighting the height of a landmark to determine distance off from the landmark. o. Find the ratio in both fraction and decimal. Cos A. Sin A. Tan B. 5. B. C. 13. o. 77. o. 8.60. 7. A. hyp. opp. adj. 5/8.60 .58. 7/8.60 .81. 5/7 .71. Classify each angle as an angle of elevation or angle of depression.. Solving Problems with . Trigonometry. Right Angle Problems. Angle of elevation: the angle through which the eye moves up from horizontal to look at something above. Angle of depression: the angle through which the eye moves down from horizontal to look at something below. .  . Section 2.4. Solving Right Triangles. Objective: . SWBAT . s. olve . problems involving angles of elevation and angles of depression.. An . angle of elevation. . is the angle formed by a horizontal line and a line of sight to a point . Warm Up. 1.. . Identify the pairs of alternate . interior angles. . 2.. Use your calculator to find tan 30° to the nearest hundredth. . 3.. Solve . Round to the nearest hundredth.. Solve problems involving angles of elevation and angles of depression.. You will. angle of elevation. angle of depression. Vocabulary. An . angle of elevation. . is the angle formed by a horizontal line and a line of sight to a point above the line. Angles of Elevation and Depression. Dr. Shildneck. Fall, 2014. Tips for Solving Word Problems. Draw a picture. ! And, fill in what you know.. Find the right triangle(s) in the picture that you will need to use..