15,254 Answered Questions for the topic precalculus

Precalculus

12/09/22

Simplify the following expression: (sqrt(16)(x^6))/(sqrt4)(x^2)
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Precalculus

12/09/22

Simplify the following expression: (2^3)(x^-2)/(2^-3)(x^-5)
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Precalculus

12/09/22

Write the product as a sum:
12sin(27x)sin(24x) =
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Precalculus

12/09/22

A parallelogram has sides of lengths 4 and 9, and one angle is 48°.
What is the length of the smaller diagonal?length =  ______ unitsWhat is the length of the longer diagonal?length =  ______ units
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Precalculus

12/09/22

Solve 6cos(6x)=5 for the smallest three positive solutions
Give your answers accurate to at least two decimal places, as a list separated by commas.
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Precalculus

12/09/22

Given a triangle with angle A = 99 degrees and sides a = 40 and b = 19. Find side c.
c =
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Precalculus

12/09/22

The Law of Sines
To find the distance across a river, a surveyor chooses points A and B, which are 243 yds apart on one side of the river. She then chooses a reference point C on the opposite side of the river and... more
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Precalculus

12/09/22

A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 5.9 km apart, to be 29° and 47°, as shown in the figure.
Find the distance of the plane from point A.distance from A = _______ kmFind the elevation of the plane.height =  _______ km
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Precalculus

12/09/22

Determine the unknown length using the Law of Sines
A communications tower is located at the top of a steep hill, as shown. The angle of inclination of the hill is 57°. A guy wire is to be attached to the top of the tower and to the ground, 152 m... more
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Precalculus

12/08/22

What are the coordinates of the focus of the conic section shown below? y^2+16y-4x+4=0
Find the focus. Please show the process for finding p.
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Precalculus

12/08/22

Write the equation of the directrix of the conic section shown below. x^2+6x-4y+5=0

Find the directrix. Please show the step-by-step process for finding p. 1/4p
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Precalculus

12/08/22

A ladder is leaning against the side of a building and formed an angle of 64° with the ground. What is the radian measure of this angle as a multiple of π?
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Precalculus

12/08/22

rewrite sin(x+π/6) in terms of sinx and cosx .
this is pre calculus I can't seem to find this in our notes anywhere so i'm not sure this was even taught to us
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Precalculus

12/08/22

If tant=1/3 , what is tan(t−π)?
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Precalculus

12/08/22

Recursive sequences

what is the recursive formula for the following two sequences?3 -9 27 -81 ….2 ½ 2 ½ 2 ½ ….
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Precalculus

12/08/22

Combinatorics password problem

a 7-character password can have upper case letters, lower case letters, and numerical digits. How many passwords are possible if it must start with a number and end with a lowercase letter... more
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Precalculus Math Calculus

12/08/22

I am not sure how to solve this pre-calc question. Show all work please. (general solutions for answer)
tan (3x)cos(2x)=cos(2x)
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Precalculus

12/08/22

What is y-12y+4x+4=0 as a parabola
*Please explain the first few steps of the algebraic process for getting it into vertex form.
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Precalculus Trigonometry

12/07/22

Given that: cos(0)=-4/7 and 0[0,pi]; find sin(0), tan(0), cot(0), sec(0), and csc(0)
0 is delta I don't know how to put the symbol inE=∈
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Precalculus Trigonometry

12/07/22

Prove the Identity: tan(a)+tan(B)=(sin(a+B))/(cos(a)cos(B)
a=AlphaB=Beta
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Precalculus

12/07/22

What is y-12y+4x+4=0 as a parabola
Write as a parabola
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Precalculus

12/07/22

The height h in feet of a ball thrown into the air after t seconds is given by h(t) = 16t2 + 25t +3. Use synthetic substitution to find the high of the ball after 1.5 seconds.

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Precalculus Trigonometry

12/07/22

Rewrite the complex number
Rewrite the complex number 6e2i in standard form ( a+bi ) round to four decimal places. Am I going nuts I thought Euler's had to be in radians when I solve the question on my own 6e2i = 6 [ cos(2)... more
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Precalculus

12/07/22

Find the polynomial function f with real coefficients that has the given degree, zeros, and solution
Degree: 4; Zeros: -3, 1, i; Solution point: f(0)= -12
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Precalculus

12/07/22

Solve 2cos^2(w)+7cos(w)+5=0 for all solutions
x = ____ where k ∈ Z
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