Exam 6: The Circular Functions and Their Graphs

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Write the word or phrase that best completes each statement or answers the question. -Find the value of the arc length when θ\theta (the central Angle) is given in degrees instead of radians.

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Solve the problem. -A car wheel has a 13 -inch radius. Through what angle (to the nearest tenth of a degree) does the wheel turn when the car rolls forward 4ft4 \mathrm { ft } ?

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Convert the degree measure to radians, correct to four decimal places. Use 3.1416 for π. - 58∘9′58 ^ { \circ } 9 ^ { \prime }

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Find the exact values of s in the given interval that satisfy the given condition. - [−2π,π);cos⁡2 s=34[ - 2 \pi , \pi ) ; \cos ^ { 2 } \mathrm {~s} = \frac { 3 } { 4 }

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Solve the problem. -A guitar string is plucked so that it vibrates with a frequency of F=60F = 60 . Suppose the maximum displacement at the center of the string is s(0)=0.53s ( 0 ) = 0.53 . Find an equation of the form s(t)=acos⁡bts ( t ) = a \cos b t to model this displacement. Round constants to 2 decimal places.

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Solve the problem. -Each tire of an automobile has a radius of 2 feet. How many revolutions per minute (rpm) does a tire make when the automobile is traveling at a speed of 105 feet per sec? Round your answer to the nearest tenth.

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Find the exact value of s in the given interval that has the given circular function value. - [π,3π2];sin⁡s=−32\left[ \pi , \frac { 3 \pi } { 2 } \right] ; \sin \mathrm { s } = - \frac { \sqrt { 3 } } { 2 }

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Graph the function. - y=−23csc⁡(23x−π2)y=-\frac{2}{3} \csc \left(\frac{2}{3} x-\frac{\pi}{2}\right)  Graph the function. - y=-\frac{2}{3} \csc \left(\frac{2}{3} x-\frac{\pi}{2}\right)

(Multiple Choice)
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Find the phase shift of the function. - y=−5cos⁡(6x+π)y = - 5 \cos ( 6 x + \pi )

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Match the function with its graph. -1) y=sin⁡3xy = \sin 3 x 2) y=3cos⁡xy = 3 \cos x 3) y=3sin⁡xy = 3 \sin x 4) y=cos⁡3xy = \cos 3 x A.  Match the function with its graph. -1)  y = \sin 3 x  2)  y = 3 \cos x  3)  y = 3 \sin x  4)  y = \cos 3 x  A.   B.   C.   D.    B.  Match the function with its graph. -1)  y = \sin 3 x  2)  y = 3 \cos x  3)  y = 3 \sin x  4)  y = \cos 3 x  A.   B.   C.   D.    C.  Match the function with its graph. -1)  y = \sin 3 x  2)  y = 3 \cos x  3)  y = 3 \sin x  4)  y = \cos 3 x  A.   B.   C.   D.    D.  Match the function with its graph. -1)  y = \sin 3 x  2)  y = 3 \cos x  3)  y = 3 \sin x  4)  y = \cos 3 x  A.   B.   C.   D.

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Convert the degree measure to radians. Leave answer as a multiple of π. - −450∘- 450 ^ { \circ }

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Find the phase shift of the function. - y=3sin⁡(x−π4)y = 3 \sin \left( x - \frac { \pi } { 4 } \right)

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Convert the radian measure to degrees. Round to the nearest hundredth if necessary. - −4718π- \frac { 47 } { 18 } \pi

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The function graphed is of the form y = a sin bx or y = a cos bx, where b > 0. Determine the equation of the graph. -The function graphed is of the form y = a sin bx or y = a cos bx, where b > 0. Determine the equation of the graph. -

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Solve the problem. -Let angle POQP O Q be designated θ\theta . Angles PQRP Q R and VRQ are right angles. If θ=51∘\theta = 51 ^ { \circ } , find the length of OU accurate to four decimal places.  Solve the problem. -Let angle  P O Q  be designated  \theta . Angles  P Q R  and VRQ are right angles. If  \theta = 51 ^ { \circ } , find the length of OU accurate to four decimal places.

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Convert the degree measure to radians. Leave answer as a multiple of π. - 288∘288 ^ { \circ }

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Approximate the length using the formula for arc length. Round to the nearest meter. -A television tower 450 m450 \mathrm {~m} high subtends an angle of 2∘10′2 ^ { \circ } 10 ^ { \prime } . How far away is the tower?

(Multiple Choice)
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Graph the function. - y=3cos⁡(x+π3)y=3 \cos \left(x+\frac{\pi}{3}\right)  Graph the function. - y=3 \cos \left(x+\frac{\pi}{3}\right)

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Find the exact value of s in the given interval that has the given circular function value. - [π,3π2];tan⁡s=1\left[ \pi , \frac { 3 \pi } { 2 } \right] ; \tan \mathrm { s } = 1

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Solve the problem. -A circular sector has an area of 128ft2128 \mathrm { ft } ^ { 2 } . The radius of the circle is 8 feet. What is the arc length of the sector?

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