Sunday
December 11, 2016

# Search: Precalc/Trig 2

Number of results: 4,262

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

trig, precalc, math, algebra, trigonometry
Rewrite: tan(cos^−1 (v)) as an algebraic expression in v. Please help me understand.
May 5, 2016 by Veronica

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

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

Trig/Precalc
Find the greatest possible value of 5cos(x)+6sin(x). I know that it would be a good idea to look for identities that are in the form of acos(x)+bsin(x), but I can't seem to find any. Other than that I don't really know where to go with this problem. Any help would be much ...
December 16, 2014 by majorbill

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

Precalc+trig
Solve tan(40/90) for the double angle cos(2theta). I know I use the x^2 + y^2 = r^2 formula and cos(2theta) = cos^2theta - sin^2theta. But I don't understand my answer
March 4, 2015 by Anna

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 don't 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

Precalc/Trig
I don't understand how to do these problems: Find two pairs of polar coordinates for each point with the given rectangular coordinates if 0 ≤ θ ≤ 2π. Round to the nearest hundredth, if necessary. 17. (2, -3) Answers: (3.61, 5.30) and (-3.61, 2.16) 19. (a...
January 21, 2015 by Heather

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
Identify all of the trig functions that fit each description: 1. Has a amplitude of 1 2. Is discontinuous at odd multiples of π/2 3. Is continuous at odd multiples of π/2 4. Has sin x as a denominator value 5. Is completely bounded 6. Has the exxact same value at &#...
September 22, 2015 by Anon

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/Trig
2 roads intersect at an angle of 60 degrees. A friend's mail box is 434 feet from that intersection and your mailbox is on the other road and is 525 feet from the intersection. How far is it from your mailbox to your friend's mailbox? I got 1016.66 feet, but that is wrong. ...
December 4, 2014 by Heather

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

Precalc Trig
here's the question: solve for cos(2theta)=1 if you graph r= cos(2Theta) then graph r=1 you find that there are four places where the graphs intersect. however, when solved algebraically, there are two solutions which can be represented in an infinitely many format as: Theta...
November 20, 2015 by Wulramm

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

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/...
September 28, 2015 by anon

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

Precalc/Trig
I have no idea how to solve this one problem: Round to two decimal places. Two observers 25 feet apart, sight to the top of the tree. If the angle of elevation to the top of the tree from the observer closest to the tree is 30 degrees and the angle of elevation from the ...
December 1, 2014 by Heather

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

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

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
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

One more problem.. Given sin t= 3/11 and cos t<0, find the values of the remaining 6 trig functions.
January 27, 2016 by Jane

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 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 ...
March 14, 2010 by hilde

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

Trig/Precalc
Two questions that I would really appreciate some hints on: 1) Circles with centers (2,1) and (8,9) have radii 1 and 9, respectively. The equation for a common external tangent can be written in the form y=mx+b with 0<m. What is b? 2) In triangle ABC, AB=BC, and BD is an ...
January 20, 2015 by majorbill

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

Trig/Precalc
The system of equations: |z-2-2i|=sqrt(23), |z-8-5i|=sqrt(38) has two solutions z_1 and z_2 in complex numbers. Find (z_1+z_2)/2. My first instinct on this problem was to square each equation given that the square of the magnitude of a complex number is much easier to deal ...
February 16, 2015 by majorbill

precalc
D(x) = x^2+2x E(x) = -2/(5x-1) D/E=
September 8, 2015 by d

Precalc
C(x)={(x,y)|y=4x-5} D(x)=x^2+2x C(D)=
September 8, 2015 by June

Precalc
D(x)=x^2+2x h(x)=7 h(D)=
September 8, 2015 by June

precalc
G(x)=2x+7 H(x)=1/(x+2) 1) H(G(x))= J: y=-3x^2 2) J(H(x))= 3) J/H=
September 9, 2015 by a

PreCalc
2x^3+x^2-8x+3>0
November 26, 2016 by Amy

Trigonometry
Use the trig Identities to find the other 5 trig functions. Problem 7.)Tan(90-x)=-3/8 8.)Csc x=-13/5 9.)Cot x=square root of 3 10.)Sin(90-x)=-.4563 11.)Sec(-x)=4 12.)Cos x=-.2351 I need HELP!
January 5, 2010 by Jennifer

trig
I am currently taking a trig class. I need help understanding how to solve for sin,cos, and tan in problems which give an angle and a side length or the hypotenus. Any help would be muchly appreciated
February 11, 2015 by Ben

trig
combine fractions and simplify to a multiple of a power of a basic trig. function.? sin x/cot²x - sin x/cos²x
March 15, 2010 by hilde

trig
I have heard that trig CAN be super easy, that there are just, like, 10 rules you need to memorize then all the problems are easy. ... Does anyone know what these are? Thanks!
April 7, 2008 by jennifer

Trig
Im having serious issues with verifying Trig. identities. Please help! Here is an example: (tanX-secX)^2= 1-sinX/1+sinX
November 7, 2011 by Rachel

trig
Solving Trig Functions: How Do You Solve For Sin 7.5 Using Half-Angle and Double-Angle Identities?
September 22, 2010 by Spy[c]

Trig
Find values of all six trig functions if sin(theta)= 4/5 and theta is in the second quadrant.
August 23, 2011 by Lucy

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

1. Pages:
2. 1
3. 2
4. 3
5. 4
6. 5
7. 6
8. 7
9. 8
10. 9
11. 10
12. 11
13. 12
14. 13
15. 14
16. 15
17. Next>>