Solve the problem.A building 250 feet tall casts a 50 foot long shadow. If a person stands at the end of the shadow and looks up to the top of the building, what is the angle of the person's eyes to the top of the building (to the nearest hundredth of a degree)? (Assume the person's eyes are 5 feet above ground level.)
A. 78.69°
B. 78.47°
C. 78.22°
D. 11.78°
Answer: B
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Write the number in trigonometric form. Let 0 ? ? < 2?.5
A. 5(cos 
+ i sin 
)
B. 5(cos 
+ i sin 
)
C. 5(cos 0 + i sin 0)
D. 5(cos ? + i sin ?)
Find the amount received by the seller of the given stock assuming a commission of $7.95.1100 shares at $15.50
A. $17,057.95 B. $14,910.80 C. $17,042.05 D. $17,050.00
Solve the problem.Ken and Kara are 35 miles apart on a calm lake paddling toward each other. Ken paddles at 4 miles per hour, while Kara paddles at 7 miles per hour. How long will it take them to meet?
A. 24 hr
B. 3
hr
C. 11
hr
D. 2
hr
Solve the problem.Julia, who is 1.70 m tall, wishes to find the height of a tree. She walks 19.73 m from the base of the tree along the shadow of the tree until her head is in a position where the tip of her shadow exactly overlaps the end of the tree top's shadow. She is now 5.24 m from the end of the shadows. How tall is the tree? Round to the nearest hundredth.
A. 2.31 m B. 6.40 m C. 8.10 m D. 0.45 m