The point P(x, y) on the unit circle that corresponds to a real number t is given. Find the value of the indicated trigonometric function at t.
?Find cos t.
A. - 
B. 
C. - 
D. - 
Answer: D
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Solve the problem.Find the moment of inertia about the y-axis of the thin infinite region of constant density 
in the first quadrant bounded by the coordinate axes and the curve 
.
A. 
B. 
C. 
D. 
Calculate the flux of the field F across the closed plane curve C.F = (x + y)i + xyj; the curve C is the closed counterclockwise path around the rectangle with vertices at (0, 0), (6, 0), (6, 10), and (0, 10)
A. 240 B. - 20 C. 420 D. 340
Find the amount of refund to the insured using this short-term rate schedule. 
Annual premium: $2637Months in force: 11
A. $1714.05 B. $527.40 C. $131.85 D. $922.95
Solve.A tank is in the shape of a cylinder 3 feet tall and 4 feet in radius. Find the exact surface area of the tank.
A. 14? sq ft B. 42? sq ft C. 56? sq ft D. 48? sq ft