Solve the problem.The wind is blowing at 10 knots. Sailboat racers look for a sailing angle to the 10-knot wind that produces maximum sailing speed. In this application, (r, ?) describes the sailing speed r, in knots, at angle ? to the 10-knot wind. Four points in this 10-knot-wind situation are (6.5, 65°), (7.5, 85°), 
and 
. Based on theses points, which sailing angle to the 10-knot wind would you recommend to a serious sailboat racer? What sailing speed is achieved at this angle?
A. 85°; 7.5 knots
B. 65°; 6.5 knots
C. 110°; 7.6 knots
D. 135°; 7.4 knots
Answer: C
Mathematics
You might also like to view...
Rewrite the expression in terms of exponentials and simplify the results.cosh 2x - sinh 2x
A. e-2x B. e2x - e-2x C. -2x D. 2e-2x
Mathematics
Evaluate the integral.
dx
A. 
B. 
C. 
D. 
Mathematics
Solve the given differential equation.
+ 16y = sin 4x
A. y = c1 sin 4x + c2 cos 4x + 
x cos 4x
B. y = c1 sin 4x + c2 cos 4x - 
x sin 4x - 
x cos 4x
C. y = c1 sin 4x + c2 cos 4x - 
x sin 4x
D. y = c1 sin 4x + c2 cos 4x - 
x cos 4x
Mathematics
Graph the polar equation.r = 1 - sin ?
A. 
B. 
C. 
D. 
Mathematics