296 Answered Questions for the topic Trigonometric Functions
Trigonometric Functions
01/17/18
Help needed in determining sin(x +y).
Question:
Determine sin(x + y) when sin(x) = 1/3, -π/2 ≤ x ≤ π/2 and cos(y) = -1/4, π ≤ x ≤ 2π
Much appreciated if anyone might be willing to help me out on this one.
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Trigonometric Functions Grade 12 Advanced Functions
01/10/18
a pendulum swings back and forth taking 2 seconds to move from the position directly above from point a to the position directly above point b, as shown in the
a pendulum swings back and forth taking 2 seconds to move from the position directly above from point a to the position directly above point b, as shown in the figure below. the distance form a to...
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12/12/17
Solving a trigonometric equation
A point on an industrial flywheel experiences a motion described by the function h(t)=13cos(pi/0.35)t + 15.
What is the general solution for the time it takes to reach maximum...
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12/09/17
Sinusoidal functions (wave problem)
The depth of water in a certain area can be estimated by using this equation:
h(t)=-4.3cos(pi/6.35(t+1.6))+8.4
A boat requires a depth of 7.2 m to ensure safe passage into the area. The...
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12/06/17
Application of a sinusoidal function
Suppose a sales can be modelled by the equation;
S=200+200cos[pi/6(t+2)]
where t is time in months with t=0 corresponding to January for what month are sales equal to 0?
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12/03/17
I don't understand what this trig problem is asking!!!!!! Can provide more info if needed
If csc(α) = 3, where 0 < α < π/2, and β is a Quadrant II angle with tan(β) = −7, find
cos(α+β)
And there are others that I'm supposed to find, such as sin(α+β), but this is just the...
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12/01/17
if h(x) = f(g(x)) where h(x) = sinx and f(x) = cosx which of the following could define the function g
options given
g(x) = √(x2-1)
g(x) = √(1-x2)
g(x) = (π/2) +x
g(x) = (π/2) - x
g(x) = tanx
I tried doing it but cos^-1(sinx) isn't possible to do with what i know
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11/30/17
Sinusoidal functions (phase shift)
A sine function has a maximum value of -5, a minimum value of -29, and consecutive minimum values when x= -π/5 and x= (4π)/15. Determine the phase shift
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11/28/17
Trig equations
A boat sails on a bearing of 75° for 128miles and then turns and sails 203miles on a bearing of 191°. Find the distance of the boat from its starting point.
I am unsure how to solve this equation
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11/15/17
Solve a trig equation
solve the equation for the solutions over the interval [0 degrees, 360 degrees)
6sec2xtanx=12tanx
I am unsure of where to begin.
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11/15/17
Trig functions
cos(3theta)=-1
solve for exact solutions over the interval [0,360 degrees]
I am having trouble finding a place to start.
11/15/17
Trig questions
I am getting stuck at 7 plus or minus sqrt 309 / 26
13sin^2x-7sinx=5
solve for interval [0,360degrees]
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Trigonometric Functions
11/14/17
Proof:cot^2(A)+1/cos^2(A)-1=sec(2A)
Plz help me solve this sum, I will really appreciate it.
Trigonometric Functions
10/24/17
find an equation of a sinusoidal function that has minimum at the point (2,1) has a period of 8 and an amplitude of 3
find an equation of a sinusoidal function that has minimum at the point (2,1) has a period of 8 and an amplitude of 3
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Trigonometric Functions
10/19/17
Solve the equation on the interval 0 less than or equals theta less than 2 pi 0≤θ<2π. 2 cosine theta plus 1 equals 0 2cosθ+1=0
Solve the equation on the interval 0 less than or equals theta less than 2 pi0≤θ<2π.2 cosine theta plus 1 equals 02cosθ+1=0
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Trigonometric Functions Trigonometry
10/04/17
find the angle in radians in the figure below if s=10 and r=7
you haveto change it from radians to degrees
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Trigonometric Functions Trigonometry
10/01/17
Even-odd and periodic properties of trigonometric functions
-sin(3x+2π)+cos(-3x)•tan(π-3x)
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Trigonometric Functions Optimization
09/19/17
finding the max of a trig function
f(x) = 5sin (-4x)-3 in the domain 0<x<2 pi
i know how to find the derivative
f'(x) = -20 cos (-4x)
but i am unsure as to how you solve this for critical...
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Trigonometric Functions Trigonometric Identities
09/14/17
By definition of amplitude, in order for a function to have an amplitude the function must be...
There are 2 possible answers I can choose from. Either Bounded or Continuous
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Trigonometric Functions
08/25/17
cos θ = 1 2 and θ terminates in QIV
Find the remaining trigonometric functions of θ based on the given information. cos θ = 12and θ terminates in QIV
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Trigonometric Functions
08/25/17
If g(x.y) = cos(3x + 4y) , what is the range of g(x,y) in interval notation?
I know that the range of cos(x) is [-1,1], but I'm not sure how to calculate the range for this function.
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08/18/17
True or False: For a one-to-one function, y= f(x), then x = f^-1(y)
How do you get the solution?
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Trigonometric Functions
08/08/17
Trig function
1.A mass on a spring moving up and down is an example of harmonic motion. If the height of the spring mass system follows the function h(t)=5cos2t , where t is the time in seconds and h is the...
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Trigonometric Functions Trigonometry
08/07/17
Prove the Identity (step by step)
sin(x) + sin(3x) = 4 sin(x) cos^2(x)
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