Simplify the expression. Assume that all variables are positive when they appear.
A. 27
B. -9
C. ±9
D. 81
Answer: B
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The point P(x, y) on the unit circle that corresponds to a real number t is given. Find the values of the indicated trigonometric function at t.
?Find csc t.
A. 
B. - 
C. - 
D. 
Find the equation of a circle satisfying the given conditions.Center: (5, -5); radius: 
A. (x - 5)2 + (y + 5)2 = 2 B. (x + 5)2 + (y - 5)2 = 4 C. (x - 5)2 + (y + 5)2 = 4 D. (x + 5)2 + (y - 5)2 = 2
Solve each problem.The velocity of a particle (in ft/s) is given by 
where t is the time (in seconds) for which it has traveled. Find the time at which the velocity is at a minimum.
A. 6 s B. 1 s C. 2 s D. 3 s
Solve the problem.A window washer accidentally drops a bucket from the top of a 64-foot building. How long will it take the bucket to hit the ground?
A. 4 sec B. 2 sec C. 32 sec D. -2 sec