Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.cot ? = 
, ? < ? < 
Find tan 2?.
A. 
B. - 
C. - 
D. 
Answer: D
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Solve the problem. Unless stated otherwise, assume that the projectile flight is ideal, that the launch angle is measured from the horizontal, and that the projectile is launched from the origin over a horizontal surfaceA baseball is hit when it is 2.2 ft above the ground. It leaves the bat with an initial velocity of 
at a launch angle of 22°. At the instant the ball is hit, an instantaneous gust of wind blows against the ball, adding a component of -12.8i (ft/sec) to the ball's initial velocity. Find a vector equation for the path of the baseball.
A. r = (152 sin 22° - 12.8)ti + (2.2 + (152 cos 22°)t - 16t2)j B. r = (152 cos 22° - 12.8)ti + (2.2 + (152 sin 22°)t - 16t2)j C. r = ((152 cos 22°)t - 12.8)i + (2.2 + (152 sin 22°)t - 16t2)j D. r = (152 cos 22° - 12.8)ti + (2.2 + (152 sin 22°)t + 16t2j
Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the x-axis.y = 3x, y = 6x, y = 3
A. 
?
B. 9?
C. 
?
D. 3?
Identify the equation as either an identity or not.1 + sec2x sin2x = sec2x
A. Not an identity B. Identity
Choose the most reasonable metric length unit. Choose from km, m, cm, and mm.The height of the paperback book is 18 
.
A. cm B. mm C. m D. km