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Answer:
(b) y/6 = 7/5.25
Step-by-step explanation:
Clockwise from the obtuse angle, the side ratios are ...
<u>Fig I</u> : <u>Fig II</u>
4.2 : 3.15
y : 6
7 : 5.25
6 : x
4 : 3
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A true proportion will have corresponding parts of these ratios in corresponding places. The only true proportion listed is ...
Step-by-step explanation:
DEFINITION: Besting: the clockwise totation (0° to 360°) from North to any line.
A) Calculate the bearings of D from A:
bearings of D from A =x
looking the picture:
x=48°+55°+180°
x+103°+180°
x=283°
B)Calculate the bearings of A from C:
bearings of A from C =y
180°+55°=y
y=235°
C) Calculate the distance between A and B:
The angle in B is 74° (Because 55°+51°+74°=180°)
Using the Law of sines:
D)Calculate the distance between D and C:
Using the Law of cossines:
E) A Helicopter is hovering at A at a height of 2.5Km, find angle of elevation of helicopter from C:
The triangle HBA is rectangle
α=7,49°