Calculus Questions on trigonometry

Fill in the blank.The

solution of the equation
2 cos x − 1 = 0 is given by

x =

π
3

+ 2nπ and

x =

5π
3

+ 2nπ, where
n is an integer.

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2./0.41 pointsLarPreCalcRMRPAlt6 6.3.002.My Notes

Question Part
Points
Submissions Used

Fill in the blank.

The equation tan2(x) – 5 tan(x) + 6 = 0 is an equation of type.

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3./0.41 pointsLarPreCalcRMRPAlt6 6.3.003.My Notes

Is x = 0

a solution of the equation

cos x = 0?

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4./0.41 pointsLarPreCalcRMRPAlt6 6.3.004.My Notes

To solve sec x sin2 x = sec x,

do you divide each side by

sec x?

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5./0.41 pointsLarPreCalcRMRPAlt6 6.3.008.My Notes

Verify that the x-values are solutions of the equation.14 cos2 2x − 7 = 0

(a)x =

π
8

14 cos2

2

π
8

− 7

= 14 cos2

π

− 7

= − 7

= 0

(b)

x =

3π
8



14 cos2

2

3π
8

− 7

= 14 cos2

3π

− 7

= − 7

= 0

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6./0.41 pointsLarPreCalcRMRPAlt6 6.3.014.My Notes

Find all solutions of the equation in the interval [0°, 360°). (Enter your answers from smallest to largest.)$ sin(x) = dfrac{{color{red}sqrt{2}}}{2} $

x =
°

x =
°

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7./0.41 pointsLarPreCalcRMRPAlt6 6.3.016.My Notes

Find all solutions of the equation in the interval [0°, 360°). (Enter your answers from smallest to largest.)$ tan(x) = {color{red}sqrt{3}} $

x =
°

x =
°

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8./0.41 pointsLarPreCalcRMRPAlt6 6.3.018.My Notes

Find all solutions of the equation in the interval [0, 2π). (Write your answer in terms of π. Enter your answers from smallest to largest.)$ sin(x) = {color{red}}dfrac{1}{2} $

x =

radians

x =

radians

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9./0.41 pointsLarPreCalcRMRPAlt6 6.3.022.My Notes

Find all solutions of the equation in the interval [0, 2π).cos x =

1
2

x =

(smaller x-value)

x =

(larger x-value)

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10./0.41 pointsLarPreCalcRMRPAlt6 6.3.026.My Notes

Find all solutions of the equation in the interval [0, 2π).sec x = 2

x =

(smaller x-value)

x =

(larger x-value)

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11./0.41 pointsLarPreCalcRMRPAlt6 6.3.030.My Notes

Question Part
Points
Submissions Used

Solve the equation for x. Use n as an integer constant.$ (sqrt{2} sin(x)) + 1 = 0$

x =

(smaller value for a given
n)

x =

(larger value for a given
n)

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12./0.49 pointsLarPreCalcRMRPAlt6 6.3.034.My Notes

Question Part
Points
Submissions Used

Solve the equation. (Use n as an integer constant. Enter your response in radians.)3 cot2(x) − 1 = 0

x =

(smaller value)

x =

(larger value)

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