TRIGONOMETRY 5. The Douglas fir on Vancouver Island is one of the tallest trees in Canada. The angle of elevation measured by an observer who is 78 metres from the base of the tree is 50°. How tall is the tree?

TRIGONOMETRY 5. The Douglas fir on Vancouver Island is one of the tallest trees in Canada. The angle of elevation measured by an observer who is 78 metres from the base of the tree is 50°. How tall is the tree?

PREALGEBRA

15th Edition

ISBN:9781938168994

Author:OpenStax

Publisher:OpenStax

Chapter9: Math Models And Geometry

Section9.3: Use Properties Of Angles, Triangles, And The Pythagorean Theorem

Problem 108E: On a map, San Francisco, Las Vegas, and Los Angeles form a triangle whose sides the shown in the...

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mmary (250 words) - Ontario Secondary School Literacy Course (OLC306) - Pressacco - Niagara CDSB
TRIGONOMETRY
5. The Douglas fir on Vancouver Island is one of the tallest trees in Canada. The angle of
elevation measured by an observer who is 78 metres from the base of the tree is 50°.
How tall is the tree?
6. A landscape designer wants to design a triangular garden as shown below. Determine the
total amount of fencing needed to enclose the garden, to the nearest metre.
46°
36°
20 m

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