Exam 11: Trigonometric Functions

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Evaluate the given expression. cos π2\frac { \pi } { 2 }

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A manufacturer will supply x units of a certain commodity to the market when the price is p=S(x)p = S ( x ) dollars per unit,where S(x)=23+3x2.5sinπxS ( x ) = 23 + 3 x - 2.5 \sin \pi x . What is the producers' surplus when x = 5 units?

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Specify the number of degrees in the indicated angle. \infty

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Solve the given differential equation subject to the specified initial condition. dydt=cost9y;y(0)=3\frac { d y } { d t } = \frac { \cos t } { 9 y } ; y ( 0 ) = 3

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Differentiate the given function. g(t)=5sin10t6sint10g ( t ) = 5 \sin ^ { 10 } t - 6 \sin t ^ { 10 }

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Differentiate the given function. f(t)=sin6tcos4tf ( t ) = \sin 6 t - \cos 4 t

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Find the volume of the solid generated by rotating the region R about the x-axis.R is the region bounded by the x-axis, y=secxy = \sec x , x=π4x = - \frac { \pi } { 4 } ,and x=π4x = \frac { \pi } { 4 } .

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A projectile is fired from a cannon at ground level at an angle of 2424 ^ { \circ } with an initial velocity of 54 ft/sec.How far from the cannon does the projectile land? Round your answer to the nearest tenth of a foot. Use the following formulas x= \theta t y=-16+ \theta t+

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Determine the period p,the amplitude b,the phase shift d,and the vertical shift a of the given trigonometric function f(t). f(t)=2+5cos[π3(t+1)]f ( t ) = 2 + 5 \cos \left[ \frac { \pi } { 3 } ( t + 1 ) \right]

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Find the indicated integral: (20cosx6sinx)dx\int ( 20 \cos x - 6 \sin x ) d x

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Find the indicated integral. x5sin(3+x6)dx\int x ^ { 5 } \sin \left( 3 + x ^ { 6 } \right) d x

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Convert the indicated angle from degrees to radians. 185185 ^ { \circ }

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Find all values of θ\theta in the specified interval that satisfy the given equation. sinθ=cos2θ,0θ2π\sin \theta = \cos 2 \theta , 0 \leq \theta \leq 2 \pi

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Evaluate the given expression. tan 9π4\frac { 9 \pi } { 4 }

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Convert the indicated angle from radians to degrees. 23π12\frac { 23 \pi } { 12 }

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Suppose a company determines that the profit P (in hundreds of dollars)obtained from sales during week t (for 0t520 \leq t \leq 52 )of a particular year may be modeled by the trigonometric function P(t)=11540cos[π(t17)26]P ( t ) = 115 - 40 \cos \left[ \frac { \pi ( t - 17 ) } { 26 } \right] What is the largest weekly profit?

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Find secθ\sec \theta if sinθ=35\sin \theta = \frac { 3 } { 5 }

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Using a graphing utility,find the value of t for which the smallest value of x(t)occurs for the indicated interval.Estimate to four decimal places,if necessary. x(t)=et(4sin3t+3cos2t) for 0tπx ( t ) = e ^ { - t } ( 4 \sin 3 t + 3 \cos 2 t ) \text { for } 0 \leq t \leq \pi

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Evaluate the given expression. sec (17π4)\left( - \frac { 17 \pi } { 4 } \right)

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