Solve the problem.A pier 1250 meters long extends at an angle from the shoreline. A surveyor walks to a point 1500 meters down the shoreline from the pier and measures the angle formed by the ends of the pier. If is found to be 53°. What acute angle (correct to the nearest 0.1°) does the pier form with the shoreline? Is there more than one possibility? If so, how can we know which is the correct one?
What will be an ideal response?
53.6° or 20.4°; yes; direct observation
Mathematics
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List all the subsets of the given set.?
A. {?} B. { }, {0} C. ? D. no subsets
Mathematics
Find the area of the region under the given curve 
over the indicated interval.
?
?
A. 
B. 
C. 
D. ?
E. ?
Mathematics
Solve the problem.The surface area of a balloon is given by S(r) = 4?r2, where r is the radius of the balloon. If the radius is increasing with time t, as the balloon is being blown up, according to the formula 
find the surface area S as a function of the time t.
A. S(r(t)) = 
?t3
B. S(r(t)) = 
?t9
C. S(r(t)) = 
?t6
D. S(r(t)) = 
?t6
Mathematics
Write the complex number in polar form. Express the argument in radians.- 5 + 5
i
A. 10
B. 10
C. 5
D. 5
Mathematics