Wednesday
October 26, 2016

# Search: Precalculus/Trig 6

Number of results: 4,708

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

precalculus
how you do you use the power-reducing formula to find the exact value of the trig function: sin^2(37pi/12)
December 12, 2010 by Jessica

Precalculus/Trig 6
Find the exact value of the following trigonometric functions: sin(13pi), cos(14pi), tan(15pi)
October 8, 2012 by Greg

Precalculus with Trig
Rewrite the following expression as an algebraic expression in x: cos(arcsin(x))
April 7, 2013 by Natalie

Precalculus/Trig 5
Find the exact value of thet following trigonometric functions: tan(5pi/6) tan(7pi/6) tan(11pi/6)
October 8, 2012 by Greg

Precalculus
I'm interested in teaching myself Precalculus and would like to find a good book with lesson plans and assignments. Any ideas?
January 8, 2010 by Sheryl

Precalculus/Trig 3
The degree measure of an angle theta is 40 degrees. What is the radian Measure of theta? at what point P does the terminal ray intersect the unit circle (what is the ordered paid P(____, ___)?
October 8, 2012 by Greg

Precalculus/Trig 5
A radio transmission tower is 120 feet tall. How long should a guy wire be if it is to be attached 15 feet from the top and is to make an angle of 26 degrees with the ground? Give your answer to the nearest tenth of a foot
January 14, 2013 by Anonymous

Precalculus/Trig 5
A radio transmission tower is 120 feet tall. How long should a guy wire be if it is to be attached 15 feet from the top and is to make an angle of 26 degrees with the ground? Give your answer to the nearest tenth of a foot
January 14, 2013 by Anonymous

Precalculus
Consider the equation 7sin^2x - (4sin2^x)/cosx = -1 a) Put the equation in standard quadratic trig equation form. Why is it 7sin^2x - 8sinx + 1 =0?
January 27, 2012 by Melissa

trig/precalculus
A crate weighing w pounds sits on a ramp positioned at an angle of x with the horizontal. The forces acting on this crate are modeled by the equation Mwcosx = wsinx, where M is the coefficient of friction. What is an expression for M in terms of x? A. M = tanx B. M = cotx C. M...
December 13, 2011 by A

trig/precalculus
A crate weighing w pounds sits on a ramp positioned at an angle of x with the horizontal. The forces acting on this crate are modeled by the equation Mwcosx = wsinx, where M is the coefficient of friction. What is an expression for M in terms of x? A. M = tanx B. M = cotx C. ...
December 13, 2011 by Joesph

Trigonometry Questions 1.) Find the exaqct value of tan(11π/12) 2.) A linear trig equation involving cosx has a solution of π/6. Name three other possible solutions 3) Solve 10cosx=-7 where 0≤x≤2π
December 4, 2013 by john

precalculus
find the values of the requested trig functions using the given value and quadrant in which the point corresponding to the angle lies. quadrant II; sinθ=4/5 find cosθ and tan θ
October 10, 2015 by glen

Precalculus/Trig
I can't seem to prove these trig identities and would really appreciate help: 1. cosx + 1/sin^3x = cscx/1 - cosx I changed the 1: cosx/sin^3x + sin^3x/sin^3x = cscx/1-cosx Simplified: cosx + sin^3x/sin^3x = cscx/1-cosx I don't know where to go from there. 2. (sinx + cosx)(tanx...
August 15, 2014 by Heather

Precalculus Test
I have a precalculus test coming up and I'm not really understanding how to do everything. Please help. 1. Find the angle betweem 0 and 2pi which is coterminal to the angle -(7pi)/5. Now convert the angle you just found to degrees.
April 8, 2013 by marie darling

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

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

precalculus
Precalculus-------Give an example of three functions f,g,h none of which is a constant function such that? fog=foh but g is not equal to h. I tried with many functions but not getting like f=x g=1+x then h=?or any other example so that we get fog=foh
September 23, 2012 by Fatima

3-D Coordinates Polar coordinates Precalculus Trig
The U.S.S. Lollipop is on assignment in the Atlantic Ocean. It travels from a longitude of 70 degrees west to 20 degrees west, along the latitude of 40 degrees north. How far does it travel? (Assume that the radius of the Earth is 6,400 km.) Erm I don't know how to solve this...
December 18, 2013 by Cambridge

Precalculus
I've tried many times to get the equation to balance using trig identities like half-angle formulas, power-reducing formulas, and double angle formulas, but I couldn't get the equation to equal out. I only need to work one side to make it equal to the other, like a kind of ...
December 2, 2010 by Christina

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

Can anyone please explain these problems to me?? I really need help!I need to simplify these trig expressions but I don't understand how my teacher is doing it at all and I have a quiz on this tomorrow! I've really been trying but I just don't get it! 1)Mulitply: [cosx/(1-cosx...
May 5, 2012 by Valerie

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

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

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

Precalculus Trig (Geometry)
A large doorway has the shape of a parabolic arch. The doorway is 20 feet high at the top of the arch and 20 feet wide at the base. At a height of 10 feet above the floor, find the width of the arch. If you start the vertex of the parabola at 0,0, that means the equation ...
April 19, 2015 by Michele

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 to a...
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

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

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

Decide whether the following problem can be solved using precalculus, or whether calculus is required. If the problem can be solved using precalculus, solve it. If the problem seems to require calculus, explain your reasoning and use a graphical or numerical approach to ...
January 9, 2012 by Anonymous

trig
If cos 0 = - 1/2 and tan 0 > 0, find the quadrant that contains the terminal side of 0, and then find the exact values of the other five trig functions of 0.
May 14, 2011 by shawn

trig
find the exact values of the six trig functions of theta equals six pi divided by 8
October 17, 2011 by don

Precalculus/Trig
Prove the following identity: 1/tanx + tanx = 1/sinxcosx I can't seem to prove it. This is my work, I must've made a mistake somewhere: Converted 1/tanx: 1/sinx/cosx + sinx/cosx = 1/sinxcosx Simplified 1/sinx/cosx: cosx/sinx + sinx/cosx = 1/sinxcosx Found common denominator ...
August 14, 2014 by Heather

trig
2sin(4x)[(cos(3/2)x)(cos(5x/2)-sin((15/4)x)]+x can someone simplify this using trig identities?
May 13, 2012 by Brianna

trig
Determine if the value of each trig function is positive, negative, zero, or undefined. a) tan 310 degrees b) cos 7pi/6 c) sin -245 degrees d) sec( -7/2)
January 26, 2012 by Anonymous

algebra/trig
1.Find the domain f(x)=ã(x^(2)-9) 2. Find all six trig functions for (-3,4)
June 8, 2011 by Mike

trig
hi, I have a placement test coming up tomorrow, and I'm pretty confident about all the stuff that's going to be there except trigonometry. I took trig two years back and I understood it very well. But now it's been so long and I can't even remember the basics. Is there any ...
June 1, 2010 by y912f

Math trig
Hello guys. I am just wondering if tan^2 A (tan squared A) = sin^2 A /cos^2A And 2tan A = 2sin A / 2cos A This has been bothering me when I have to simplify trig. Thanks in advance.
June 1, 2016 by Jack

trig
Find the exact values of the other trig functions of theta given sec theta=7 and sin theta is less than 0.
May 8, 2011 by Nick

Trig identity.
I need help with verifying these trig identities: 1) sin4x = 4sinxcos - 8sin^3 x cos x 2) cos3x = cos^3 x - 3sin^2 x cos x
March 15, 2016 by Jane

trig
Prove the following trig identity: 1 + sinx = sinx(1+cscx)
November 4, 2009 by Anonymous

trig
how do i find six trig functions for cos(pi over 2-x)=3/5, cos x=4/5?
October 19, 2010 by Anonymous

Trig
HELP!!!! I don't know how to do the trig identity with this problem csc^4 x-cot^4x= Csx^2 x + cot^2x
March 8, 2012 by Quetzally

trig
how to graph thr trig function f(x)3x-180)+2 and the parent function?
January 7, 2013 by kim

graphing trig functions
for graphing basic trig functions such as y=2sinx or y=1/3cosx, how do you know what the points are to graph with out using a calculator?
May 18, 2012 by bkue

Math - Trig
Hi I have a Trig question that i don't understand, can someone please explain how to solve for it using cosine law?? A Clock with a radius of 15 cm has an 11 cm minute hand and a 7 cm hour hand. How far apart, to the nearest centimetre, are the tips of the hands at each time? ...
April 30, 2008 by Mark

trig
use trig identities to rewrite: (1/(1-cos4v))-(1/(1+cos4v))
August 26, 2011 by liz

Trig
Prove the trig identity cos(4x)=2-sec^2(2x)/sec^2(2x)
April 13, 2010 by leo

Trig
Prove the trig identity cos(4x)=2-sec^2(2x)/sec^2(2x)
April 14, 2010 by kristina

trig
prove the trig identity cos(4x) = 2-sec^2(2x)/sec^2(2x)
April 14, 2010 by kevin

trig
Write the expression and evaluate. There is only one answer whIch should match the range of the inverse trig function. Sec^-1(-2) I got 2pi/3 could someone tell me if that is right? And if not, could someone please explain how to get the answer.
September 5, 2011 by Charles

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]
July 11, 2016 by Amber

Trig
How do i set this trig problem up? PLEASE help me. Find tan (s + t) given that sin s = 1/4, with s in quadrant 2, and sin t = -1/2, with t in quadrant 4.
May 3, 2010 by Dave

PreCalculus
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 5 9 7 1 4 6 2 0
December 1, 2009 by Joe

precalculus
3.6 ln 29
July 16, 2011 by Denise

Precalculus
ln x -4 In 3 =ln (1/5 x)
December 11, 2012 by Sarah

Trig
A ramp 38' long rises to a platform. The bottom of the platform is 20' from the foot of the ramp. Find x , the angle of elevation of the ramp. Round your answer to the nearest hundredth of a degree. After this question I'm done with TRIG!!! Thanks
May 15, 2011 by Rachal

Precalculus Trig (Geometry)
A rectangular doorway is 38 meters wide and 60 meters high. The doorway is capped with a semi-ellipse that is 13 meters high at its center. Find the height h of the doorway and window 5 meters from the center. From the ellipse equation, I can see that a should be 19 and b ...
April 19, 2015 by Michele

trig
how would you verify this trig identity (1+cos(x) / 1-cos(x)) - (1-cos(x) / 1+cos(x)) = 4cot(x)csc(x) ? help please!
June 25, 2008 by amanda

trig
please help me. use trig. identities to find the exact value. tan 25° + tan 5° / 1- tan 25° tan 5°
April 30, 2010 by ann

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