188 Answered Questions for the topic Precalc

05/28/20

Find sin ( u 2 ) if csc u = 11.008 and u is in Quadrant-I (assume that 0 < u < 2 π ).
if someone could show the process of how to get the answer for this
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05/01/20

What is the component form of resultant of 4b-5a? a=(1,-3) b=(-1,2)
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05/01/20

p and q are complex numbers such that p=2/5x+1, q=x+1, and p+q=3x+2. What interval must x fall?
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04/29/20

Which equation is the polar equivalent to the to the equation y=-√3x?
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04/29/20

A Ferris wheel completes 7 revolutions in 14 minutes. The radius of the Ferris wheel is 30 feet. What is the linear velocity of the Ferris wheel in inches per second?
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04/29/20

The terminal ray of angle ∅ drawn in standard position passes through (2,-3). What is the value of csc ∅?
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04/29/20

The polar equation r=6sin(4∅) graphs as a rose. What is the length of the petals of this rose?
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04/29/20

√3/2cis(2π/9)*√6/4cis(3π/2)
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04/20/20

On a unit circle, what is sin θ for coordinates (√2/2, -√2/2)?
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04/14/20

For what values of a and b is the line 4x + y = b tangent to the parabola y = ax^2 when x = 4?
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04/06/20

Jack wants to build a tree house.
His parents worry that he is building it too high. If Jack’s dad is looking at the tree house location from a 39° angle and then moves back 10 feet so he can see it at a 31° anglehow high is the... more
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Precalc Math Trig

04/02/20

tanxsecx-3tanx=0
Solve equation on the interval [0𝜋, 2𝜋)
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04/02/20

Convert r=2/7sinθ-cosθ to rectangular form
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04/02/20

p and q are complex numbers such that |q|=4√5 and |p+q|=9√2. On what interval must |p| fall on?
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04/01/20

sin2x/1-sin^x = 2tanx
prove the identity above
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04/01/20

sin^2 x(1+cot^2 x)=1
prove the identity above
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04/01/20

cos3x+cos5x/cos3x-cos5x = cotxcot4x
prove the identity above
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04/01/20

cos(x+pi/2)=-sinx
to prove the identity above
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03/27/20

Compute the magnitude and direction of the combined vectors: 200N of force at 90° and 150N of force at 60°
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03/27/20

a=(2,-3) and b=(1,4) Represent a+b by using the parallelogram method.
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03/26/20

What is the component form of a resultant 4b-2a? a=(6,-2) b=(-5,2)

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03/26/20

What is the component form of the vector whose tail is the point of (-2,6) and whose head is the point (3,-4)?
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03/23/20

Given f(x)=AcosB(x-C)+D, changing which parameter, A, B, C, or D, will affect the phase shift of the function? How will this affect the position of the graph?
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03/23/20

Given f(x)=AsinB(x-c)+D, how does A affect the shape of the graph given A>1?
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03/23/20

Give the Cartesian coordinates for the point with polar coordinates (r,Θ)
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