25
QuizMultiple Choice
Unit Test — Unit test
Question 25 • TX-Pre-Calculus
Kim drew the diagram below to find x, the length of the pole holding up the stop sign that is at an angle with the ground as shown.The pole casts a 12-foot shadow when the sun is at a 40° angle of elevation. Which equation could Kim use to find x, the length of the pole?
Answer
A
StartFraction sine 40 over x EndFraction equal to StartFraction sine 60 over 12 EndFraction.
B
StartFraction sine 40 over 12 EndFraction equal to StartFraction sine 60 over x EndFraction.
C
StartFraction sine 60 over x EndFraction equal to StartFraction sine 80 over 12 EndFraction.
D
StartFraction sine 80 over x EndFraction equal to StartFraction sine 40 over 12 EndFraction.