5
QuizMultiple Choice

Law of Cosines

Question 5 • NC-Math 4 CR

A 15-foot flagpole leans slightly, such that it makes an 80° angle with the ground. The shadow of the flagpole is 10 feet long when the sun has an unknown angle of elevation. How could the angle of elevation of the sun, x, be determined?

Question illustration
Answer
A
by determining the length of TV using , and then determining the value of x using
Option A
B
by determining the value of x using
Option B
C
by determining the length of TV using , and then determining the value of x using
Option C
D
by determining the value of x using
Option D
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