Sunday
May 19, 2013

# Search: Trignometry

Number of results: 80

Trignometry
yes I have.
Monday, April 12, 2010 at 7:32pm by sarah

trig
graphs of trignometry
Saturday, November 20, 2010 at 6:07am by zainab

Trignometry questions EASY HELP
I dont know
Wednesday, June 29, 2011 at 6:03pm by Chandu

trignometry
y = sin 8x + 3 period ?
Friday, July 1, 2011 at 5:27pm by Anonymous

trignometry
tanx=1/1,tany=1/3 then cos2x=sin2y
Friday, December 28, 2012 at 4:09am by gopi

math
how to find points of continuity in trignometry
Wednesday, January 18, 2012 at 11:51pm by saphire

trignometry
how to find derivative of (2+cotx)/(7-tanx)
Friday, October 28, 2011 at 2:26am by Xie

Trignometry questions EASY HELP
Wednesday, June 29, 2011 at 6:03pm by kalakalikalakali

trignometry
find the exact value of sec theta?
Thursday, February 14, 2008 at 1:00pm by b

maths-trignometry
The value of (secpi/7)+(sec3pi/7)+(sec5pi/7) is
Thursday, March 14, 2013 at 4:00am by anoynomous

maths-trignometry
The value of (secpi/7)+(sec3pi/7)+(sec5pi/7) is
Wednesday, March 13, 2013 at 12:38pm by anoynomous

maths-trignometry
The value of (secpi/7)+(sec3pi/7)+(sec5pi/7) is
Wednesday, March 13, 2013 at 10:39am by anoynomous

trignometry
prove: sin(a+b)/cosacosb=tana+tanb
Tuesday, March 9, 2010 at 2:06am by Sarah Fuller

trignometry
if 12 cot^3 A - 31cosecA+32=0 thend find SinA ?
Wednesday, March 31, 2010 at 11:51am by pramod

trignometry
Solve sin(2è) &lt; cos(è). Give an exact answer.
Sunday, April 19, 2009 at 3:38pm by m

mathematics trignometry
if tanA=ntanX sinA=msinX then prove that cos^2A=(m^2-1)/(n^2-1)
Sunday, March 20, 2011 at 12:01pm by Anonymous

maths-TRIGNOMETRY
show that: 2^5 cos^2a sin^4a=cos6a-2cos4a- cos2a + 2
Thursday, February 21, 2013 at 11:35am by Anonymous

trignometry
how to find the value of any standard angle ??? for example sin 60*??? without using table
Thursday, December 6, 2012 at 8:15am by suraj

Trignometry
How can I find the exact value of 4cos(7ð/4)-2sin(ð/3) without using a calculator (show work)?
Tuesday, January 31, 2012 at 10:31pm by Anonymous

algebra2/trignometry
in right triangle PQR,Q=90DEGREE,PQ=4 AND PR=7 WHAT IS ANGLE R TO THE NEARST TENTH OF A DEGREE
Wednesday, April 27, 2011 at 9:14pm by mathew

maths-trignometry
I saw this before, I know the answer is exactly 4 , but at the moment I cannot see how to show that. Been messing around with it for a while,
Thursday, March 14, 2013 at 4:00am by Reiny

Trignometry
ABCD is a square where M and N are midpoints of AD and CD, respectively. If sin&#8736;MBN=a/b, where a and b are coprime positive integers, what is the value of a+b?
Monday, March 18, 2013 at 3:39am by Stranger

trignometry
Prove That 2sin^pi/6 + cosec^7pi/6cos^pi/3 = 3/2
Wednesday, June 15, 2011 at 3:44am by Anonymous

algebra/trignometry
x=-16 ,y=17 when x squared -4y squared
Wednesday, July 13, 2011 at 9:18am by kathy

trignometry
1. if sin 2A = Psin2B, prove that tan(A+B)/tan(A-B)=P+1/P-1.
Monday, June 13, 2011 at 6:26am by seema

algebra/trignometry
Verify that each trigonometric equation is an identity tan^2+1/sec Î± =sec Î±
Wednesday, July 13, 2011 at 9:18am by maria

Can someone help me understand what that even function & odd function is, in trignometry
Sunday, August 8, 2010 at 8:49am by Aishwarya

Trignometry
that weird symbol is suppose to be pi (3.14...) I punched in the alt code but it seems after I submitted the question it turned out like this
Tuesday, January 31, 2012 at 10:31pm by Anonymous

algebra/trignometry
if angle x is 30 degrees and side yz is 10ft, how long is side xy?
Wednesday, June 29, 2011 at 11:52pm by maria

mathematics trignometry
if sina, cosa, tana are in geometric progression then prove that cot^6a-cot^2a=1
Sunday, March 20, 2011 at 11:49am by Anonymous

Trignometry
Unless these are right triangles, more information is needed to answer your questions. Is there a figure that is supposed to go with these questions?
Saturday, September 11, 2010 at 4:22am by drwls

pre algebra
This is not trignometry. What kind of class are you taking that doesn't give you a text book or online text materials????
Sunday, June 20, 2010 at 9:38pm by Ms. Sue

maths-trignometry
Prove that tan-1 (1/7) + tan-1 (1/13) = tan-1(2/9)
Saturday, March 16, 2013 at 2:41pm by anoynomous

Trignometry
domain of arcsin is [-1,1] So, we want -1 &lt;= x^2-35 &lt;= 1 34 &lt;= x^2 &lt;= 36 now you can figure M and m easily
Monday, March 18, 2013 at 3:29am by Steve

Trignometry
on the paper all the info is given is : Given Trianlge ABC, and i think all of em are right triangles...
Saturday, September 11, 2010 at 4:22am by Anonymous

trignometry
x = pi/4, so cos2x = 0 since y &#8800; pi/2, sin2y &#8800; 0 I suspect a typo somewhere
Friday, December 28, 2012 at 4:09am by Steve

Trignometry
Have you learned the expansion formulas for sin(A-B) and cos(A-B) that is, sin(A-B) = sinAcosB - cosAsinB I will have to know to determine which approach to show you
Monday, April 12, 2010 at 7:32pm by Reiny

Physics
I assume you have had some trignometry. x component=10+10cos30 + 10cos(70+30) go thru that and make certain you understand it. I will be happy to check your y component.
Thursday, July 21, 2011 at 2:34pm by bobpursley

Trignometry
If two angles are supplementary, then their sines are equal. Explain why. What about the cosines of supplementary angles? If you are not sure, calculate some examples.
Monday, April 12, 2010 at 7:32pm by sarah

correction - Trignometry questions EASY HELP
in #2 I had my formula backwards should say cos 2A = 2cos^2 A - 1 cos 30 = 2cos^2 15 - 1
Wednesday, June 29, 2011 at 6:03pm by Reiny

trignometry
show that cos2x=1-tan^ 2 x /1+tan^2x=2cos^2x-1
Saturday, October 6, 2012 at 12:20pm by help me out it's urgent

Calculus(Pre)
What is linear speed and angular speed (In Trignometry)
Thursday, November 17, 2011 at 4:43pm by Professor Calculus

Trignometry
Let m and M be the minimum and maximum values of the domain of f(x)=sin^&#8722;1(x2&#8722;35), respectively. What is the value of M&#8722;m? sin^-1 is sin inverse
Monday, March 18, 2013 at 3:29am by Stranger

algebra2/trignometry
(PQ)^2 + (QR)^2 = (PR)^2, 4^2 + (QR)^2 = 7^2, (QR)^2 = 7^2 - 4^2 = 49 - 16 = 33, QR = 5.7. cosR = QR/PR = 5.7/7 = 0.8207. R = 34.8 deg.
Wednesday, April 27, 2011 at 9:14pm by Henry

Trignometry
Suppose the ends of the cylindrical storage tank in the figure arc circles of radius 3 ft and the cylinder is 20 ft long. Determine the volume of the oil in the tank to the nearest cubic foot if the rod shows a depth of 2 ft.
Friday, March 29, 2013 at 3:10pm by CiCi

physics
Use trignometry to compute how much higher he is at the 35 degree angular position that at the bottom of the swing. Call that distance h. You will need to subtract a cosine term from the length to get h. This is something you should be able to do. Then use conservation of ...
Wednesday, November 11, 2009 at 9:27am by drwls

Trignometry
A car is moving at a rate of 55 mph and the diameter of its wheels is 2 feet. A) Find the number of revolutions per minute the wheels are rotating. B) Find the angular speed of the wheels in radians per minutes.
Tuesday, February 12, 2013 at 10:57pm by David

trignometry
In the right triangle shown below, the length of AB is 8 units, ¡ÏA measures 60¡ã, sin 60¡ã ¡Ö 0.866, cos 60¡ã ¡Ö 0.5, and tan 60¡ã ¡Ö 1.73. Approximately how many units long is BC...
Wednesday, April 24, 2013 at 11:57pm by gt

trignometry
In the right triangle shown below, the length of AB is 8 units, ¡ÏA measures 60¡ã, sin 60¡ã ¡Ö 0.866, cos 60¡ã ¡Ö 0.5, and tan 60¡ã ¡Ö 1.73. Approximately how many units long is BC...
Wednesday, April 24, 2013 at 11:56pm by gt

Trignometry
The angles in triangle ABC satisfy 6sin&#8736;A=3&#8730;(3)sin&#8736;B=2&#8730;(2)sin&#8736;C. If sin^2&#8736;A=a/b, where a and b are coprime positive integers, what is the value of a+b?
Monday, March 18, 2013 at 3:27am by Stranger

trignometry
Your expression makes no sense We use the ^ symbol as an exponent sign. so your 2 sin^&#960;/6 would be 2(sin)^(&#960;/6) which is meaningless if you simply meant: 2 sin(&#960;/6) + cosec(7&#960;/6)cos(&#960;/3) that would be 2(1/2) + (-2)(1/2) = 0 retype ...
Wednesday, June 15, 2011 at 3:44am by Reiny

Trignometry
An isosceles triangle has two sides of length w that make a 2á-degree angle. Write down two different formulas for the area of this triangle, in terms of w and á (Greek “alpha”). By equating the formulas, discover a relation involving sin 2á, sin...
Monday, April 12, 2010 at 7:25pm by Lydia

Trignometry
If we let x = &#8736;MBN and y=&#8736;ABM=&#8736;NBC, then x+2y = pi/2 sin x = sin(pi/2-2y) = cos 2y = 1-2sin^2 y Now, siny = 1/&#8730;5, so sinx = 1 - 2(1/5) = 3/5 a+b=8
Monday, March 18, 2013 at 3:39am by Steve

trignometry
if alpha and beta are 2 different values of &#952; lying between 0 and 2&#960; which satisfy the equation 6cos&#952;+8 sin&#952;=9 find the value of sin alpha + beta.i want the answer by quadratic method. can u help solving sum by that method
Saturday, June 11, 2011 at 11:14am by usha

trignometry
the derivative of cot x = -csc^2 x the derivative of tan x = sec^2 x .. and you do this: [ low*d(high) - high*d(low) ] / (low)^2 where high = numerator low = denominator d(high) and d(low) = respective derivatives
Friday, October 28, 2011 at 2:26am by Jai

mathematics trignometry
prove that the following are identity 1. (cotA+cosecA-1)/(cotA-cosecA+1)=cosecA+cotA 2. (sinA-cosA+1)/(sinA+cosA-1)= 1/(secA-tanA)
Sunday, March 20, 2011 at 11:55am by Anonymous

Trignometry questions EASY HELP
1. Which is a solution to the equation below? sin2xsecx=1 2. What is the exact value of cos15 degrees? 3. Which expression is equivalent to the expression below? cos^2 xsin^2? 4. What is the exact value of cos2theta? one side is 8 and the other is 15 5. The angle x lies in ...
Wednesday, June 29, 2011 at 6:03pm by kalakalikalakali

Trignometry questions EASY HELP
This assignment is obviously meant to study the double angle formulas 1. sin 2x secx = 1 2sinxcosx(1/cosx) = 1 sinx = 1/2 so x is in I or II x = 30 or 150 degrees or pi/6, 5pi/6 radians 2. use cos2A = 1 - 2cos^2 A cos 30 = 1 - 2cos^2 A you should know cos 30, sub it in and ...
Wednesday, June 29, 2011 at 6:03pm by Reiny

Trignometry
Let &#952; be the angle between the x-axis and the line connecting the origin O(0,0) and the point P(&#8722;3,&#8722;4), where 180&#8728;&lt;&#952;&lt;270&#8728;. Given that sin&#952;+cos&#952;+tan&#952;=&#8722;a/b, where a and b...
Saturday, March 16, 2013 at 8:45am by Trigno with cordinates

trignometry
use degree measure for your answers. use a calculator and round the results to one decimal place for (c) and (d) (a) in triangle ABC, sin B = square root of 2 all over 2. What are the possible values for angle B? my thought: since sin is positive in the first and second ...
Tuesday, November 28, 2006 at 12:14am by tracy

Math trignometry
how can you condense these cos^3x* cos2x^2 cos^3x+ cos2x^2 cos^3x- cos2x^2 Thanks a lot :)
Sunday, January 23, 2011 at 6:21pm by Sabrina

algebra/trignometry
Please check with your previous post before re-posting the same question. http://www.jiskha.com/display.cgi?id=1310559328
Wednesday, July 13, 2011 at 9:18am by Reiny

Trignometry
then take sin(180-x) , where we know x and 180-x are supplementary = sin180cosx - cos180sinx = 0 - (-1)sinx = sinx so sinx = sin(180-x) now for the second cos(180-x) = cos180cosx + sin180sinx = (-1)cosx + 0 = - cosx and cos(180-x) = -cosx
Monday, April 12, 2010 at 7:32pm by Reiny

algebra/trignometry
Draw a triangle. Label the angles x, y, and z. Label what are given. Determine whether what you have is SOH, CAH, or TOA. http://www.mathsisfun.com/algebra/sohcahtoa.html
Wednesday, June 29, 2011 at 11:52pm by TutorCat

trignometry
make yourself a sketch of the 30-60-90 ° and the 45-45-90 ° right angled triangles the ratios of those sides are (in the same order) 1--&#8730;3--2 and 1--1--&#8730;2 so sin30 = 1/2 --- csc30 = 2 cos30 = &#8730;3/2 --- sec30 = 2/&#8730;3 tan30 = 1/&...
Thursday, December 6, 2012 at 8:15am by Reiny

Trignometry
Given Triangle ABC: I think there are suppose to be right triangles... 1) If &lt;A = 30º, and c = 20, find a, b, and &lt;B 2) If a = 10 and b = 14, find c, &lt;A, and &lt;B 3) If a = 6 and &lt;B = 53º, find b, c, and &lt;A 4) If c = 13 and b...
Saturday, September 11, 2010 at 6:52pm by Anonymous

trignometry
cos 2x = cos(x+x) = cosxcosx - sinxsinx = cos^2 x - sin^2 x = cos^2 x - (1 - cos^2 x) = 2 cos^2 x - 1, the last part of your equation. all we need it to look at now is the middle part of (1 - tan^2 x)/(1 + tan^2 x) , notice the necessary brackets = (1 - sin^2 x/cos^2 x)/(1 + ...
Saturday, October 6, 2012 at 12:20pm by Reiny

Trignometry
so the radius is 1 ft and the circumference is 2&#960; 55 mph = 55(5280)/60 ft/min = 4840 ft/min so rotations per min = 4840/2&#960; = 770.31 since 1 rotation is 2&#960; radians angular speed = 4840/(2&#960;) * 2&#960; = 4840 radians/min
Tuesday, February 12, 2013 at 10:57pm by Reiny

Trignometry
I'm assuming all rt triangles. 1. Given: A = 30, c = 20. a = csinA = 20sin30 = 10, b = ccosA = 20cos30 = 17.3, B = 90 - A = 90 - 30 = 60. 2. Given: a = 10, b = 14. c^2 = a^2 + b^2 = 10^2 + 14^2 = 100 + 196 = 296, c = sqrt(296) = 17.2 tanA = a/b = 10/14 = 0.7143, A = 35.5, ...
Saturday, September 11, 2010 at 6:52pm by Henry

trignometry
Since you posted this twice, I think you realized that the symbols did not come out like you intended. I think you meant this: AB = 8, angle A = 60° then you are given sin60° = .866 cos60° = .5 tan60° = 1.73 the problem is that we don't know where the 90&...
Wednesday, April 24, 2013 at 11:57pm by Reiny

Trignometry
assuming the rod lies along a diameter of the circle, you need to find the area of a circular segment, knowing its height and the circle's radius. Draw a diagram. If the depth is d, then the central angle subtending the surface of the oil can be found using cos(&#952;/...
Friday, March 29, 2013 at 3:10pm by Steve

Trignometry
1) If &lt;A = 30º, and c = 20, find a, b, and &lt;B 2) If a = 10 and b = 14, find c, &lt;A, and &lt;B 3) If a = 6 and &lt;B = 53º, find b, c, and &lt;A 4) If c = 13 and b = 12, find a, &lt;A, and &lt;B 5) If &lt;A = 20º and b...
Saturday, September 11, 2010 at 4:22am by Anonymous

trignometry
Oh well, if you do not like WLS' cool method then cos T = sqrt(1 - sin^2 T) 6 sqrt(1 -sin^2 T) + 8 sin T = 9 let sin T = x 6 sqrt(1-x^2) + 8 x = 9 6 sqrt (1-x^2) = 9-8x 36 (1-x^2) = 81 - 144x + 64 x^2 36 -36 x^2 = 81 - 144x + 64 x^2 100 x^2 -144 x + 45 = 0 x = [ 144 +/- ...
Saturday, June 11, 2011 at 11:14am by Damon

Trignometry
For the whole triangle Area = (1/2)(w)(w)sin 2a = (1/2)w^2sin 2a draw in an altitude h, bisecting the angle 2a because we have an isosceles triangle Area of triangle = (1/2)hwsin a + (1/2)whsina = whsin a but cos a = h/w h = wcos a then whsin a = w(wcos a)sin a = w^2sin a cos ...
Monday, April 12, 2010 at 7:25pm by Reiny

Trignometry pls help
1. The radius of the circumscribed circle of the triangle ABC is 15 cm. Given that B is a 49-degree angle, find the length of side AC. 2. The radius of the circumscribed circle of the triangle ABC is r cm. Given that B is a â-degree angle, find the length of side AC, in ...
Sunday, April 11, 2010 at 11:41pm by Sally K

maths-trignometry
let tanA = 1/7 and tanB = 1/13 then tan(A+B) = (tanA + tanB)/( 1 - tanAtanB) = (1/7 + 1/13)/(1 - (1/7)(1/13) ) = (20/91) / (90/91) = 20/90 = 2/9 and if we let tanC = 2/9 then A + B = C thus tan^-1 (1/7) + tan^-1 (1/13) = tan^-1 (2/9) check with your calculator take 2nd Tan (1/...
Saturday, March 16, 2013 at 2:41pm by Reiny

maths-TRIGNOMETRY
1/32(cos6a-cos2a-2cos4a+2) let us find the value of cos6a-cos2a-2cos4a+2 by applying the formula cos c-cos d = 2sin(c+d/2)sin(d-c/2) =2sin4a(sin(-2a)-2cos4a+2 =-2sin4asin2a-2cos4a+2 =2(1-cos4a-sin4asin2a) =2(cos^2(2a)+sin^2(2a)-(cos^2(2a)-sin^2(2a))-2sin2acos2a(sin2a) (since ...
Thursday, February 21, 2013 at 11:35am by Venkatesh

trignometry
sin(a+b)/cos(a)cos(b) = = (sin(a)cos(b)+cos(a)sin(b))/cos(a)cos(b) = sin(a)cos(b)/(cos(a)cos(b) + cos(a)sin(b)/(cos(a)cos(b) = sin(a)/cos(a) + sin(b)/cos(b) = tan(a) + tan(b)
Tuesday, March 9, 2010 at 2:06am by FredR

Science / Geography
Losing Your Bearings 1. Begin journey at 40 degrees N by 77 degrees W. 2. Travel 4200 miles with a compass bearing of 130 degrees. 3. Travel 2800 miles with a compass bearing of 180 degrees. 4. Travel 5250 miles with a compass bearing of 90 degrees. 5. Travel 1750 miles with a...
Saturday, October 7, 2006 at 9:18pm by Suzanne

trigonometric functions
im compeletely lost with the trigonometric functions...can anyone explain clearly to me? Are you lost on the definitions?...where is the problem. You need to be able to draw and label all the parts of a triangle, the hypotenuse and legs. Then be able to define sine, cosine, ...
Thursday, September 14, 2006 at 6:51pm by Katrina

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