Solve the problem.You are sitting in a classroom next to the wall looking at the blackboard at the front of the room. The blackboard is 13 ft long and starts 3 ft from the wall you are sitting next to. Show that your viewing angle is ? = cot-1 
- cot-1 
.
What will be an ideal response?
The angle ? made between the ground and the top of the blackboard is equal to cot-1 
. The angle ? - ? made between the ground and the bottom of the blackboard is equal to cot-1 
. Therefore ? - (? - ?) = ? = cot-1 
- cot-1 
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Solve the inequality. Express your answer using interval notation.
> 9
A. 
or 
B. 
or (2, ?)
C. 
D. 
or (2, ?)
The distance that an object will fall in t seconds varies directly with the square of t. An object falls 7 feet in 1 second. How long will it take to fall 28 feet? ?
A. ?
B. ?
C. ?
D. 
E. ?
Add..702 + 29
A. 29.692 B. 29.702 C. 29.703 D. 29.812
Solve the problem.If a projectile is fired at an angle ? and initial velocity v, then the horizontal distance traveled by the projectile is given by 
Express D as a function of 2?.
A. D = 
v2 sin 2?
B. D = 
v2 cos 2?
C. D = 
v2 sin 2?
D. D = 
v2 sin 2?