2,195 Answered Questions for the topic Pre Calculus

Pre Calculus Precalculus Trigonometry

02/01/22

Trigonometry Help Solve
Solve −2sin(1/4x)+4=4 for 0≤x≤2π.
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Pre Calculus Precalculus Trigonometry

02/01/22

Trigonometry Solve Please
Solve 4sinx+2=0 for 0≤x≤360º.
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Pre Calculus Precalculus Trigonometry

02/01/22

Trigonometry/ Pre Calculus Help
Give the sine function that has a period 3π/2 of , shifted to the right by 1/3, up by 2, and has an amplitude of 3.
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Pre Calculus Precalculus Trigonometry

02/01/22

Trigonometry Question
A company needs to connect a physical data line to a building on an island located 1000m off the shore. The hub station that needs to be connected to the island building is located 3000m away from... more
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Pre Calculus Precalculus Trigonometry

02/01/22

Radius of a Circle
What is the radius of the circle with an opening of 2π/3 and arc length of 10m? 
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Pre Calculus Precalculus Trigonometry

02/01/22

Coterminal Angles
The coterminal angle θ for 2121º such that 0º≤θ≤360º is The coterminal angle θ for 2121º such that -360º≤θ≤0º is The reference angle θ for 2121º is
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Pre Calculus Precalculus Trigonometry

02/01/22

Trigonometry Help

Find the exact values other 5 trig functions given that cosθ=513. (use fractions, and sqrt() to represent any radicals. i.e. sqrt(2)=2√)sinθ=tanθ=cscθ=secθ=cotθ=
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01/21/22

Hi, please help another piece-wised function problem
If f(x)={2x-4 if -1≤x≤2 x3-2 if 2≤3Find: a. f(0) b.f(1) c. f(2)
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Pre Calculus Math Calculus Precalculus

01/20/22

need help with understanding math problem
How is sin(x) = cos(x) the same as tan(x) = 1 and result in x = pi/4 ? Please give the steps to solve for x in sin(x) = cos(x). Thank you.
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Pre Calculus

01/19/22

Use a piece of paper to create an augmented matrix to represent this linear system. 3x - 4y = 12 2x - 8y = 16 How many rows does your matrix have?
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01/18/22

Simplify the trigonometric expression and identify the trigonometric identities used: cos^2(θ)-1 / cos^2(θ) - cosθ
cos2(θ)-1 / cos^2(θ) - cosθ
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01/17/22

Evaluate the following expressions. Write your answer in degree form. Cos^(-1) √3/2
Evaluate the following expressions. Write your answer in degree form. Cos^(-1) √3/2
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Pre Calculus

01/12/22

parabola quiz calculus

A parabola can be drawn given a focus of (6, 4) and a directrix of x=−6. What is the location of the vertex?
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Pre Calculus

01/12/22

pre- calculus exponents and logarithms
Robert takes a roast out of the oven when the internal temperature of the roast is 165°F. After 15 minutes, the temperature of the roast drops to 135°F.The temperature of the room is 70°F.How long... more
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01/10/22

Express the series into a summation notation
Juan’s father is giving him an allowance of ₱150 every day for 7 days. His father decided to increase the amount given each day as a reward for being an honor student. If Juan’s father will... more
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01/10/22

Determine the first five terms of each and give their associated series
a. {3 𝑛 − 1} b. {5𝑛 − 2𝑛 2 }
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01/09/22

log2 (x+4) +log2 (x-3) =3
Could someone walk me through the steps? I tried to factor to find x but it didn't work.
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01/08/22

The shorter side of a rectangle is 92 cm and the angle made by the diagonal and the shorter side is 60.71 degrees. Find the length of the rectangle.

The shorter side of a rectangle is 92 cm and the angle made by the diagonal and the shorter side is 60.710. Find the length of the rectangle.
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01/08/22

The angle of elevation of a building 80 m high from a man on the ground is 50.41 degrees. How far is the man from the building?

The angle of elevation of a building 80 m high from a man on the ground is 50.41 degrees. How far is the man from the building?
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01/07/22

The angle of elevation of a building 80 m high from a man on the ground is 50.41 degrees. How far is the man from the building?

The angle of elevation of a building 80 m high from a man on the ground is 50.41 degrees. How far is the man from the building?
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01/07/22

From the top of a cliff 350 ft high lighthouse, the angle of depression of a motorboat on the sea is 10.15 degrees. Find the distance of the boat from the base of the lighthouse.

 From the top of a cliff 350 ft high lighthouse, the angle of depression of a motorboat on the sea is 10.15 degrees. Find the distance of the boat from the base of the lighthouse.
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01/07/22

When the angle of elevation of the sun is 61 degrees, the building casts a horizontal shadow of 50 meters. How high is the building?

When the angle of elevation of the sun is 61 degrees, the building casts a horizontal shadow of 50 meters. How high is the building?
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01/07/22

The shorter side of a rectangle is 92 cm and the angle made by the diagonal and the shorter side is 60.71 degrees. Find the length of the rectangle
The shorter side of a rectangle is 92 cm and the angle made by the diagonal and the shorter side is 60.710. Find the length of the rectangle
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Expert Answers •1

01/06/22

The angle of elevation of a building 80 m high from a man on the ground is 50.41 degrees. How far is the man from the building?

The angle of elevation of a building 80 m high from a man on the ground is 50.41 degrees. How far is the man from the building?Please show illustration.
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01/06/22

Sketch the two cycles of the graph (starting from x = 0) of the given function. Indicate the amplitude, period, phase shift, domain and range and vertical asymptotes.

Sketch the two cycles of the graph (starting from x = 0) of the given function. Indicate the amplitude, period, phase shift, domain and range and vertical asymptotes.y = tan 2x
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