Bellringer Turn Last week’s Bellringers into the folder on the projector podium Have Worksheet and Notes out on your desk Work on p. 510 #1 – 7.

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Presentation transcript:

Bellringer Turn Last week’s Bellringers into the folder on the projector podium Have Worksheet and Notes out on your desk Work on p. 510 #1 – 7

Section 8-4: Angles of Elevation and Depression SPI 3108.4.15 Determine and use the appropriate trigonometric ratio for a right triangle to solve a contextual problem.

Refresher of Solving Trig Problems Same process as on Friday If it helps, you may want to go through and label the Opposite (O), Adjacent (A), and Hypotenuse (H) as your first step Figure out what pieces you have and then set up your ratio

Angles of Elevation/Depression The angle of elevation is the angle looking up from the horizontal line The angle of depression is the angle looking down from the horizontal line They are equal to each other!

Word Problem “A meteorologist measures the angle of elevation of a weather balloon as 41 degrees. A radio signal from the balloon indicates that it is 1503 m from his location. To the nearest meter, how high above the ground is the balloon?” Draw the picture first!!

Using Angles of Elevation/Depression Careful of “eye level” problems The only difference is you add the eye level height above the ground to your FINAL answer “You see a rock climber on a cliff at a 32 degree angle of elevation. Your eye level is 6 ft above the ground and you are 1000 ft from the base of the cliff. What is the approximate height of the rock climber from the ground?”

Classwork/Homework Worksheet Quiz Tomorrow Test on Thursday