# Pre-Calculus-Trig

24,379 results

**Pre- Calculus**

Evaluate the trig function tan33degress

**Pre-calculus/ trig**

Given the vectors a= (-1,9) and b= (4,2) explain the difference between a-b and b-a. Thank you for your help! :)

**pre calculus 2**

use the fundamental trig. Identities to simplify tan^4x+2tan^2x+1

**Pre-calculus**

find the trig functions of angle x if the terminal side of x passes through the point (-12, 5).

**Pre-Calculus/Trig...**

Help Please For the function defined by: f(x)= (x^2,x≤1) (2x+1,x>1) Define f(0). and also how would i graph f(x)?

**Pre-Calculus/Calculus**

I am too embarassed to ask this Calculus (really pre-calculus) question in tutoring, because I know I should know. Is the inverse of f(x)=3x-1 actually f(x)=1/3x+1? How do I find it? What if it asks the same equation replaced with f to the -1 power (x)? I think I know how the ...

**Pre Calculus/Trig**

find the area of a circle inscribed in triangle ABC where a=9, b=13, and the measure of angle C=38 degrees

**Pre Calculus**

Pre Calculus why is sin(-20)/cos 380 equal to tan (-200)

**Calculus/pre-trig**

Write the formula for the discriminant. State the types of roots for a quadratic equation, explaining how the discriminant helps you determine the type.

**Finite Math**

Fifty percent of students enrolled in calculus class have previously taken pre-calculus. Thirty percent of these students received an A for the calculus class, whereas twenty percent of the other students received an A for calculus. Find the probability that a student selected...

**Pre-Calculus**

I am in Honors Pre-Calculus and am having a hard time understanding my teacher. I feel so stupid. Does anyone have any suggestions on a website that might give me some insight into what I am doing wrong? Thanks!

**Pre-Calculus-Trig**

A road rises 140 feet per horizontal mile. What angle does the road make with the horizontal?

**Pre-Calculus-Trig**

A 40 foot high flagpole sits on the side of a hill. The hillside makes a 17 degree angle with horizontal. How long is a wire that runs from the top of the pole to a point 72 feet downhill from the base of the pole?

**Pre-Calculus-Trig**

A pilot in a plane at an altitude of 22,000 feet observes that the angle of depression to a nearby airport is 26 degrees. How many miles is the airport from a point on the ground directly below the plane?

**Pre-Calculus-Trig**

A surveyor stakes out points A and B on sides of a building. Point C on the side of the building is 300 feet from A and 440 feet from B. Angle ACB measures 38 degrees. What is the distance from A to B?

**Pre-Calculus-Trig**

A lighthouse keeper 100 feet above the water sees a boat sailing in a straight line directly toward her. As watches, the angle of depression to the boat changes from 25 degrees to 40. How far has the boat traveled during this time?

**Pre-Cal**

[Note: I'm still having issues with identities with regard to trig] Verify the Trig. identities: (a). cot(x+y)=(cotxcoty-1)/(cotx+coty) (b). sin0(cot0+tan0)=sec0 [Note: 0=theta symbol]

**calculus**

1. what trig function has an amplitue of 1 and negative values for angles between π/2 and π? 2. what trig function never crosses the x-axis and has a value of 2 at π/6? are these correct? 3. what trig function has a period of π and is undefined for -π/...

**Trig/Pre-Calc**

Need help with current Trig problem for tomorrow: Solve the logarithmic equation algebraically. Approximate the result to three decimal places. 6log3(0.5x)=11 I know to start off the equation you divide by 6. I know the answer is 14.988. I just am puzzled on how to receive the...

**Pre-Calculus-Trig**

Two trains depart simultaneously from the same station. The angle between the two tracks on which they leave is 120 degrees. One train travels at an average speed of 45 mph and the other at 70 mph. How far apart are the trains after three hours?

**Pre-Calc/Trig...**

If f(x)=1/(x+2), what is f(3+h)? A. 1/(3+h) B. 1/(h+5) C. 1/(x+2)(3+h) D. (3+h)(x+2)

**Pre-Calculus-Trig**

A pole tilts 12 degrees from the vertical, away from the sun, casts a 34 foot long shadow on level ground. The angle of elevation from the end of the shadow to the top of the pole is 64 degrees. How long is the pole?

**pre-calc/ trig**

Sinx=0

**Pre-Calc/Trig...**

what is In e^4.3 equivalent to? How?

**Pre-calc/trig**

5=log3(x^2+18)

**Pre-Calc/Trig...**

Assume f(x) = -2x + 8 and g(x) = 3x. What is the value of (f + g)(-1)?

**Pre-Calc/Trig...**

vertex form:y-4=-(x-4)^2

**Pre-Calc/Trig**

Help Please Find (fog)(2) and (f+g)(2) when f(x)= 1/x and g(x)=4x+9

**Pre-Calc/Trig...**

Solve using any method. 1. 2x^2+5x-3=0 2. -x^2+x+1=0

**Pre-Calc/Trig**

How would I solve this? x^2+10x+24=0

**Pre-Calc/Trig**

Have i solved this correctly? x^2+3x-28=0 (x+7)(x-4)=0 x=-7 or 4

**Pre-Calc/Trig...**

Find S5 for a geometric series for which a1 = 81 and r = 1/9.

**Pre-Calculus**

I'm trying to finish up my pre-cal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^2-4x 33. f(x)=√x^2-1 (that's square root of x^2-1) thank you so much for the help =)

**Pre-Calculus**

I'm trying to finish up my pre-cal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^2-4x 33. f(x)=√x^2-1 (that's square root of x^2-1) thank you so much for the help =)

**Pre Calc , Math**

Find the 6 Trig ratios of -7Pie/3

**Pre-Calc/Trig**

Help please State the x and y-intercepts for each function. f(x)= -x^3+4x

**Pre-Calc/Trig**

What are the polynomial names for these functions. 1.) m(x)=x+x^2-1 2.) d(x)=x+ 3.14 3.) 2-6x^2+11x^3

**Pre-Calc/Trig**

is the integer n odd or even, explain

**Pre-Calc/Trig...**

Write the equation y = bx in logarithmic form.

**Pre-Calc/Trig...**

Use the rules of logarithms to expand [(x+3)^4(x-5)^7]

**Pre-Calculus-Trig**

A boat travels for 8 kilometers in a straight line from the dock. It is then sighted from a lighthouse which is 6.5 kilometers from the dock. The angle determined by the dock, the lighthouse(vertex), and the boat is 25 degrees. How far is the boat from the lighthouse?

**pre-ap pre calculus**

To solve an equation by finding x-intercepts, Cynthia graphed the function y=x^3-5x+|2x-3| Give several possibilities for the original equation. How do I do it and what's the answer? Thanks

**Pre-calc, Algebra, Trig**

(2x squared-3x +1)(4)(3x+2)cubed (3)+(3x +2)raised to the 4 (4x-3) Simplify

**Pre-Calc/Trig...**

Use the discriminant to determine the nature of the roots. 1. 2x^2+5x-3=0 2. -x^2+x+1=0

**Pre-Calc/Trig...**

Write the equation y = log x in exponential form.

**Pre-calc/Trig**

For each parabola, find the vertex and focus. x= (1/400)y^2 y= 1/8(x-3)^2-1

**pre cal\trig**

Find the following cot(Arccsc 25/24) show your work

**Pre-calc/Trig...**

which of the following are quadratic functions? check all that apply 1. y=2x^2-3x+7 2. y=3x-4 3. y=(5x-3x^2)/4+1 4. y=x-x^3

**Pre-Calc/Trig**

y=-x^2+5x+36 converting into intercept form is this the correct answer? y=(x+9)(x-4)

**Trig/Pre-Calc**

Solve the polynomial equation. 15x^3-119x^2-10x+16=0

**Pre-calc/Trig**

For each parabola, tell in which direction the graph opens. x= 1/2y^2 y= -1/24x^2

**Pre-Calculus-Trig**

A straight road slopes at an angle of 10 degrees with the horizontal. When the angle of elevation of the sun (from horizontal) is 62.5 degrees, a telephone pole at the side of the road casts a 15 foot shadow downhill, parallel to the road. How high is the telephone pole?

**Pre Calculus 12**

Im going over my pre calculus 12 exam, and I need help with one question from the chapter Transformations of graphs and stuff. Combining Transformations 2y = f(5x-10)+8 The original points are (4,6) and the new points I got by translating it and stuff are : (14/5,20) But in ...

**Pre-Calc/Trig...**

am i correct? What is the axis of symmetry for the graph of y=2x^2-4x+2? x=? the line goes through 1? x=1

**Pre-Calc/Trig...**

Help me please. Solve the equation: (x-3)(x+2)=0 Enter the solution with the lowest value.

**Pre-Calc/Trig**

Describe the end behavior for function by writing a limit expression. f(x)=2x^5-x+7

**Pre-Calc/Trig**

write an equation of the conic section: a hyperbola with vertices (0,-6) and (0,6) and asymptotes y=(3/4)x and y=(-3/4)x

**Pre-Cal: Trig**

The point (7,2) determines a poistion angle "t". Find the exact value of sin(t).

**Pre-Cal: Trig**

The point (7,2) determines a position angle "t". Find the exact value of sin(t).

**Pre-Calc/Trig**

Helpp please State the domain and range of each of the following functions: 1. f(x)=1/(x+3) 2. g(x)=√x+6 3. h(x)=x^3+2x+5

**Pre-Calc/Trig...**

Am i correct? A vertical shift is an example of a non-rigid transformation. True

**Pre-Calc/Trig**

I have looked this up, but still cant figure out what it is.. What is the projectile motion function?

**Pre-Calc/Trig...**

Help me please Is the given linear expression a factor of the polynomial? Show work. f(x)=2x^3+x^2-5x+2; x+2

**Pre-Calc/Trig**

Help me please. List all possible rational zeros for the polynomial function. p(x)=3x^3-2x^2-5x-2

**Pre-Calc/Trig**

Identify the asymptotes, removable discontinuities, and intercepts for the graph of the function. d(x)=(x^2-12x+20)/3x

**Pre-Calc/Trig...**

Which of the following could be an example of a function with a domain (-oo,oo) and a range (-oo,2)? Check all that apply. A. y= -(3)^x+2 B. y= -(3)^x-2 C. y= -(0.25)^x+2 D/ y= -(0.25)^x-2

**Pre-Calculus**

Can you show me how to find the rectangular equation: r=2cos(theta) + 3 sin (theta) All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you

**Pre-Calculus/Trig Check please and help**

Could someone please check the first one and help me with the second one. I'm stuck-Thank you 1.What are theroots of the following polynomial equation? (x+2i)(x-5)(x-2i)(x+8) = 0 I think the roots are -2i,5,2i,-8-you take out the roots as opposites of what are in the equaion ...

**Pre Calc Trig**

Verify the following: tan( a + p/2) = -cot a a= alpha and p= pie since I do not have that button.

**Pre-Calc/Trig**

Use Descartes' rule of signs to describe the roots of the polynomial function. m(x)=x^3+3x^2-18x-40

**Pre-Calc/Trig**

Go over this with me please, I forgot how to do it. Solve the polynomial equation. 15x^3-119x^2-10x+16=0

**Pre-trig/Calc**

Please help me. Use Descartes' rule of signs to describe the roots for each polynomial function. 3. m(x)=x^3+3x^2-18x-40

**Pre-Calc/Trig...**

Which of the following quadratic functions has a graph that opens downwards? check all that apply A. y=2x^2-9x+3 B. y=x^2+4x+8 C. y=-(5+2x^2) D. y=60x-15x^2

**Pre-Calc/Trig...**

I have one way, but cant think of another? Show two ways of finding y if y = log4 64. Explain your thinking. 4^x=64 x=3

**Pre-Calculus-Trig**

Two surveyors, Joe and Alice, are 240 meters apart on a riverbank. Each sights a flagpole on the opposite bank. The angle from the pole to Joe (vertex) to Alice is 63 degrees. The angle from the pole to Alice(vertex)to Joe is 54 degrees. How far are Joe and Alice from the pole?

**Pre-Calc/Trig..**

Write a function for the graph described as a transformation of y=x^2 y=x^2 experiences a vertical stretch of factor 2 and then a shift right of 3 units.

**Pre-Calc/Trig**

Identify the extrema for the function. Classify it as a relative (local) or absolute (global) maximum or minimum value. f(x)=4x^3-12x^2+15

**Pre-Calc/Trig...**

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=x^2+7

**Pre-Calc/Trig...**

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=(x+5)^2

**Pre-Calc/Trig**

How would I solve this one? I just can't get this one. 6x^2+11x-35=0

**Pre-Calc/Trig...**

Help me please. Simplify 1. √-36 2. -√-625

**Pre- cal Trig**

2cos^2x=cosx. Can you subtract the cos from cos^2? Or what would i have to do?

**Pre-Calc/Trig...**

Which of the following is the equation of a line parallel to the line y = 3x + 2, passing through the point (10,1)? 3x + y = 29 3x - y = 29 -3x - y = 29 3x + y = 29

**Pre-Calc/Trig...**

Help me do this please. Simplify the expressions using imaginary numbers. 1. √-16 2. √-49

**Pre-Calc/Trig...**

if h(x)=(fog)(x) and h(x)=3√x+3 find g(x) if f(x)= 3√x+2

**Pre-Calc/Trig...**

Write a function with the following characteristics: A vertical asymptote at x=3 A horizontal asymptote at y=2 An x-intercept at x=-5

**Pre-Calc/Trig**

Help me please, I don't understand this write using exponential notation √ 36* 3√ 64 oh and 3 is an exponent

**Pre-Calc/Trig...**

Given a geometric sequence with a1 = 6 and r = 2/3, write an explicit formula for An, the nth term of the sequence.

**Pre-Calc/Trig...**

The nth term of a geometric sequence is given by an = 1/4(4)^n-1. Write the first five terms of this sequence.

**Pre-Calculus - Reiny**

Reiny you helped me with this logarithm yesterday: How did you write it out as log2 ( √A / B^3 ) Laws of logarithms combine, write as a single logarithm Need help on this question please, Im stuck, don't know where to go abouts from here: I did it on paint and uploaded ...

**Pre-Cal (verifying trig identities)**

How would you verify the identity? sin^1/2x-cosx-sin^5/2xcosx=cos^3xradsinx

**math- pre calc/trig**

Find the length of each side of a square if the diagonal is 7(square root 2)? How do I solve or set up this problem?

**pre calc**

A math teacher uses four algebra books, two geometry books, and three pre-calculus books for reference. In how many ways can the teacher arrange the books on the shelf if books coiver the same subject matter are kept together?

**pre-calculus**

3(4^x)-2^(x+2) = -1

**pre calculus**

27^8x-3=(1/81)^8x-4 x=?

**pre calculus**

2n^1/3(n^2/3+n^-1/3)

**pre-calculus**

what is the F-^1 of 6/x+4

**pre calculus**

(m+3)+5

**pre calculus**

-2< x < 5 - -

**Pre-calculus**

2^(x)/(1-2^(x))=3