Saturday

October 25, 2014

October 25, 2014

Number of results: 3,712

**precalc**

Suppose that z1=6-8i. Find: A. The Trig Form of the complex number z1, where your theta is in degrees. B. The Trig form of z1*z2, where z2=5[cos(60degrees)+isin(60degrees)] C. The Trig Form of (z1)^4
*December 5, 2011 by Joshua*

**Trig/PreCalc**

Factor the Polynomial completely: 10x^4y-20x^2y^2
*December 29, 2008 by Nuna*

**trig/PreCalc**

Find all real zeros of the function y = -7 + 4
*March 23, 2010 by jodi*

**Precalc/Trig**

what angle does the line y=6/7x make on the xy plane with a positive x axis?
*October 20, 2012 by Liz*

**Precalc/Trig**

what angle does the line y=6/7x make on the xy plane with a positive x axis?
*October 20, 2012 by Liz*

**Precalc/Trig**

Find the smallest positive number t such that e^sin(t)=1/2
*October 20, 2012 by Liz*

**precalc/trig**

Write the partial fraction decomposition of the rational expression. 4x^2–19x+31/ (x+2)(x^2–4x+5)
*December 3, 2011 by Robert*

**Precalc/Trig 1**

What equation would you use to show that the point ((square root of 11)/(6), (5/6))is on the unit circle?
*October 8, 2012 by Greg*

**Trig/Precalc**

solve 6=e^0.2t Round your answer to the nearest hundredth Someone please help me - I don't understand this problem at all!
*April 19, 2012 by tabby*

**precalc/trig**

Solve the Logarithmic equation algebraically. Give an Exact Answer and an approximation for x to four decimal places. 20 log(2x+2)=45
*December 5, 2011 by Alexander*

**precalc/trig help please**

The area of a circle is 18pi square meters. What is the radius (leaving answer in simplest radical form)
*February 21, 2012 by Carlee'*

**Precalc/Trig 2**

The point P lies in the 4th quadrant and is located on a circle of radius 2. Find the missing coordinate for P. (___, (negative square root of 3)).
*October 8, 2012 by Greg*

**Precalc/Trig**

Find all values of x, 0<x<(pi/2) for which (1/( root 3))<cotx<(root 3)
*October 10, 2012 by Patrick*

**Precalc with Trig**

What value(s) of x from 0 to 2pi solve the following equation: cos squared x - cos x - 6 = 0
*April 11, 2013 by Natalie*

**precalc/trig**

olve for the interval [0, 2pi]. cos(x+ pi/4)+cos(x- pi/4)=1
*November 29, 2012 by bob*

**precalc/trig**

Find the trigonometric form of the number. (Round any angles to two decimal places.) −8 − i
*November 29, 2011 by Alex*

**Precalc-possible or impossible (trig)**

is this possible? sec __=-.04
*December 8, 2008 by yv*

**Trig?Precalc**

write the rectangular equation x^2+y^2=6 in polar form. I do not want people to just post the answer! Please, show your work so that I can understand how to do these kinds of problems myself! Thank you and God Bless!
*April 19, 2012 by tabby*

**Trig/precalc**

Cos[x + (7 Pi)/4] + Cos[x - (7 Pi)/4] = 1
*February 12, 2013 by Joe*

**Precalc/Trig Word Problem**

From the top of a 200-ft lighthouse, the angle of depression to a ship in the ocean is 23 degrees. How far is the ship from the base of the lighthouse?
*October 8, 2012 by Greg*

**Precalc and trig**

cos^2 (x+a)-sin^2(a)= (cos x)(cos (2a+x)) prove using only side i worked on the left side...
*February 22, 2009 by hayden*

**Trig/PreCalc**

Teach me how to express 5sqrt3 - 5i in polar form please. I don't want you to do the work for me. Just show me the steps I need to do the work properly on my own. Otherwise I will not pass this class or the exam when I enter college, and I do not want to retake PreCalc. Its a ...
*April 13, 2012 by tabby*

**precalc and trig**

cos^2 (a+x) -sin^2 a=cos x * cos(2a+x)
*February 22, 2009 by hayden*

**Precalc/Trig**

wave is modeled by the function ... h(t) = 3cos(p/10)*t What is the period of the wave (T) *frequency (F) is defined as the number of cycles of the motion per second. What is the relationship between F and T? Find the wave height (H) which is the vertical distance between the ...
*September 26, 2012 by George*

**Precalc/Trig**

evaluate the expression assuming that cos(x)=1/7, sin(y)=1/3, sin(u)=2/5 and cos(v)=1/3. what is cos(u+v)? sin(x-y)? and tan(u-v)?
*November 10, 2012 by Liz*

**Precalc**

Hello, good afternoon. I need help with my precalc hw. we are learning about finding zeros I dont which method I should use for this problem: if i is a zero of x^3+3x^2+ix+(4+i) what do i do? synthetic divison? or long division? when i did long division i got a werid ...
*October 14, 2008 by Samya*

**trig/precalc**

An airplane with a ground speed of 750 mph and a bearing of N 40 E encounters a wind of 50 mph with a bearing of S 30 E. Find the bearing and ground speed of the plane.
*December 16, 2012 by Mia*

**precalc h**

sin(theta)/1-cos(theta) + 1-cos(theta)/sin(theta) = 2csc(theta) That question makes absolutely no sense.. could someone help me? or lead me in the direction to figuring it out? and.. (Beside the trig functions is theta) 1+1/cos = tan^2/sec-1
*December 9, 2012 by sam*

**Precalc with Trig**

What value(s) of theta (0 less than or equal to theta less than or equal to 2pi) solve the following equation: cos squared theta - cos theta - 6 = 0
*April 7, 2013 by Natalie*

**Trig/Precalc**

a lamp post that is 8 feet high casts a shadow 5 feet long. how tall is the person standing beside the lamp post if his shadow is 3.5 feet long
*November 24, 2013 by Marusa*

**trig/precalc**

a plane flies 810 miles form Franklin to Centerville with a bearing of 75 degrees (clockwise from north). then it flies 648 miles from centerville to rosemont with a bearing of 32 degrees. find the straight-line distance and bearing from rosemont to franklin.
*January 20, 2011 by mimi*

**trig/precalc**

a car's flywheel has a timing mark on it's outer edge. the height of the timing mark on the rotating flywheel is given by y=3.55sin[x - (pi/4)]. graph one full cycle of this function. I was not taught how to graph a function like this, only the simple y= sin x and y= cos x ...
*April 10, 2012 by tabby*

**math**

could someone please refresh my memory of the basic trig functions? ex) cos^2 + sin^2 = 1? That is a trig identity. http://www.sosmath.com/trig/Trig5/trig5/trig5.html
*April 12, 2007 by raychael*

**trig**

What kind of reflections are the following trig functions? y = 3cos(x-1) y = sin(-3x+3) y = -2sin(x)-4
*April 21, 2008 by Joshua*

**trig**

What is the shift along x of the following trig functions? y = (3sinx/2) + 4 y = -2sin(x)-4 y = sin(-3x + 3)
*April 21, 2008 by Amandeep*

**trig**

express the trig. ratios sinA,secA n tanA in terms of cotA.
*May 7, 2011 by Anonymous*

**trig**

How do you solve cos(2arcsin 1/4) using inverse trig. functions??!! PLEASE HELP ME!
*May 9, 2011 by Tor*

**Trig**

Find (if possible) the trig function of the quadrant angle. sec 3pi/2
*June 6, 2011 by Master chief*

**trig**

What kind of reflection does the trig function y = cos(4x/3 minus 1) have?
*April 21, 2008 by Priya*

**trig**

What kind of reflection does the trig function y = cos(4x/3 minus 1) have?
*April 22, 2008 by Chaitanya*

**trig**

how do i do this? give the signs of the six trig functions for each angle: 74 degrees?
*December 3, 2008 by Tay*

**trig**

simplify to a constant or basic trig function.. 1+tan(x)/1+cot(x)
*March 14, 2010 by hilde*

**trig**

find the 5 trig ratios when sin theta = -5/13 and lies in quadrant 3
*September 14, 2011 by karen*

**trig**

use the unit circle to find the exact value for all the trig functions of è=2ð/3.
*February 1, 2010 by Anonymous*

**Precalculus**

How would you solve this trig function: cos2x=sin^2-2 how do you know what trig identities to use?
*August 6, 2011 by Jess*

**Trig**

find the exact values of the six trig functions of angle... sin(-315degrees) how do i do this?
*September 1, 2011 by ALISON*

**trig**

I don't know to find the derivative of the following trig functions. Please help. f(x)= cotx h(x0= secx i(x)= cscx
*January 19, 2012 by Claire*

**trig**

I don't know to find the derivative of the following trig functions. Please help. f(x)= cotx h(x)= secx i(x)= cscx
*January 19, 2012 by Claire*

**Trig**

Does anybody know a good website that will hlp me with finding the six trig functions of a point NOT on the unit cricle?
*September 16, 2009 by Anonymous*

**trig**

find the 5 other trig functions if cos(theta) = square root of 2/2 and cotangent is less than 0
*June 9, 2010 by kelly*

**trig**

if (-12,5) is a pointon the terminal side of an angel 0 find the exact value of six trig funcation of 0
*June 19, 2014 by sal*

**trig**

what is the exact value of 7pi for all trig func.?
*February 1, 2010 by claire*

**Trig**

Find (if possible) the trig function of the quadrant angle.
*June 6, 2011 by Master chief*

**trig**

write a product of two trig functions that equals 1.
*November 6, 2011 by Dani*

**Trig**

Solve the following trig equation 2cos(x-π/6)=1
*January 31, 2012 by Matt*

**Trig **

csc thea= -2, quadrant 4. what are the six trig functions?
*May 6, 2013 by Shay*

**trig**

TRIG Identities, Gr. 12: Prove: cot4x=1-tan^2x/2tan2x
*May 23, 2013 by Josh*

**trig**

What is the shift along x of the trig function y = cos(4x/3 minus 1)? Any link of proof would be appreciated if you have one Thank you
*April 21, 2008 by Priya*

**trig**

What is the shift along y of the trig function y = cos(4x/3 minus 1)? Any link of proof would be appreciated if you have one Thank you
*April 21, 2008 by Priya*

**trig**

Let Q be an acute angle such that sinQ=.6. Find the values of the following using Trig Identities: cosQ and tanQ
*July 27, 2010 by student*

**Trig**

Use Trig identities to verify that sec^4(x)-tan^4(x)=1+2tan^2(x), Only work with one side of the equation
*March 1, 2011 by Anonymus*

**trig**

how to i find the six trig values for (7pi/3)
*January 12, 2010 by Rak*

**trig**

what's the single trig. function of cos6xcosx-sin6xsinx
*May 17, 2012 by MIK*

**trig**

Suppose that q is in standard position and the given point is on the terminal side of q. Give the exact value of the indicated trig function for q.
*February 21, 2011 by Anonymous*

**Trig**

The next two steps in solving this trig identity question are ??? 1/csctheta x costheta x sintheta x sectheta = sinsqtheta arghhh need help please
*December 17, 2011 by Don*

**trig**

What is the range of the trig function sin(-3x+3)?
*April 21, 2008 by Chaitanya*

**Trig**

Trig Identity. 1-sin^2x/1-cosx
*May 15, 2011 by Jill*

**trig**

write 2+2 squareroot of 3i in trig form.
*May 17, 2012 by ky*

**precalc**

1. Solve |2x + 5|< 9
*November 3, 2009 by kim*

**PreCalc**

please h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 0 4 8 7 4 9 0
*December 10, 2009 by Joe*

**precalc**

(4^x2)^2 mulipled by 1/(4^5x)=64
*October 19, 2010 by sarah*

**Precalc**

2^(x) = 0 what should x be to get 0?
*January 27, 2011 by Amy*

**precalc**

solve x/x^2-4 - 1/x+2=2
*December 7, 2011 by 95*

**PRECALC**

6∑6(2^K-1) K=1
*February 20, 2013 by ally*

**MATH**

WHAT IS PRECALC
*December 4, 2013 by ASHLEY*

**trig 26**

simplify to a constant or trig func. 1. sec ²u-tan ²u/cos ²v+sin ²v change expression to only sines and cosines. then to a basic trig function. 2. sin(theta) - tan(theta)*cos(theta)+ cos(pi/2 - theta) 3. (sec y - tan y)(sec y + tan y)/ sec y combine fractions and simplify to a...
*March 14, 2010 by hilde*

**PreCalc**

Solve for the variable m^2 + 2m +3 > = 0
*December 12, 2007 by LT*

**precalc**

what is the domain and range of -4 + 3^(x+2)
*July 30, 2008 by Jack*

**precalc**

how do u do evaluateL cos135
*December 7, 2008 by nadine*

**precalc**

How do you graph abs(y)=x
*July 24, 2009 by annemarie*

**PreCalc**

log base 5 (75)
*October 4, 2010 by aaaa*

**sophmore Precalc Please Help!!**

(e^x + e^-x)/2=1
*October 17, 2010 by KATELIN*

**precalc**

find where f(x)<0 and f(x)>0 f(x)=xlnx-2x
*October 18, 2010 by emily*

**Precalc**

How do adjM work?
*March 16, 2011 by Tory*

**precalc**

1/x is less than or equal to 4/x^3
*February 5, 2012 by Declan*

**precalc**

how to graph y=5sin[3[2-pi/6]]+2
*October 1, 2012 by Deb*

**Precalc**

how do I graph this function? x^2-xy+2x-1=0
*October 4, 2012 by Matt*

**Precalc**

how do you find x in 7-=log(x/10^-12)
*November 19, 2012 by Rebekah*

**precalc**

partial decomposition 12/x(x-2)(x+3)
*May 22, 2013 by jinie*

**Math- gr.12 Trig. **

Hi, could someone explain to me how to use a counterexample in trig to prove whether something is either an identity or equation? For ex. how would you do that with this question? sec^2x-tan^2x= cos x
*January 11, 2010 by May*

**trig**

Getting ready for trig semester finals. Can't figure out how they are simplifying these equations. (these are the review not actual test) tanx-sqr3=2tanx and 2sin^2+sinx=0
*December 11, 2011 by Josh*

**PreCalc**

How do i solve for the variable 3x= sqrt5x+1
*December 12, 2007 by LT*

**PreCalc**

write in interval notation 2x^2 < or = 9x+5
*December 12, 2007 by LT*

**precalc**

what are the slopes of the asymptotes of the hyperbola: (x^2)/9 - (y^2)/4 = 1
*February 24, 2008 by Kristen*

**precalc**

Solve sinx+cosx=0 Thanks!
*March 6, 2008 by Andrea*

**precalc**

how do u solve for this? sqrt(-10i+12)
*October 14, 2008 by Samya*

**precalc**

given e^x=1+x+x^2/2!+x^3/3!+... how do you prove that lim((e^(h)-1)/h)=1 as x->0
*February 25, 2009 by sam*

**PreCalc**

How do you find the amplitude of y=7/8sin[(-8ð/5)x]
*May 20, 2009 by Maggie*

**Precalc**

Can you simplify radical 253?
*October 9, 2009 by MUFFY*

**precalc**

Let f(x) be linear f(16)=-5 f(20)= -17 Find f(x) Calculate f(12)
*April 25, 2010 by Reema*

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