The Purplemath Forums
Helping students gain understanding and self-confidence in algebra.
Trigonometry
-
- Topics
- Replies
- Views
- Last post
-
- Two Trigonometry Questions!
by smilelots1998 on Mon Nov 29, 2010 6:17 pm - 1 Replies
- 640 Views
- Last post by stapel_eliz
on Mon Nov 29, 2010 7:59 pm
- Two Trigonometry Questions!
-
- Hard problem with right triangles
1, 2by dade488 on Sun Nov 28, 2010 1:56 am - 10 Replies
- 2090 Views
- Last post by stapel_eliz
on Mon Nov 29, 2010 7:54 pm
- Hard problem with right triangles
-
- Given f(x) = x + 2, g(x) = x, find x for (fg)(x) = 8
by The Stranger on Thu Oct 07, 2010 3:11 pm - 2 Replies
- 1250 Views
- Last post by The Stranger
on Thu Oct 07, 2010 4:37 pm
- Given f(x) = x + 2, g(x) = x, find x for (fg)(x) = 8
-
- proving (sin A + cos A) (tan A + cot A) = sec A + csc A
by misstokyo on Mon Sep 13, 2010 8:27 am - 1 Replies
- 1110 Views
- Last post by Martingale
on Mon Sep 13, 2010 11:36 am
- proving (sin A + cos A) (tan A + cot A) = sec A + csc A
-
- Translate 2 Coordinates into Angle
by kydjester on Mon Aug 30, 2010 3:26 am - 2 Replies
- 1902 Views
- Last post by kydjester
on Tue Aug 31, 2010 12:17 am
- Translate 2 Coordinates into Angle
-
- Angle of Ascent - help a math weak programmer
by webbiz on Sat Aug 28, 2010 5:24 pm - 6 Replies
- 2087 Views
- Last post by webbiz
on Mon Aug 30, 2010 4:41 pm
- Angle of Ascent - help a math weak programmer
-
- solve 2sin^2(x) + 5cos(x) = 4, sin(2x) = 2cos^2(x)
by spycrab on Mon Aug 23, 2010 12:36 am - 1 Replies
- 988 Views
- Last post by stapel_eliz
on Mon Aug 23, 2010 11:25 am
- solve 2sin^2(x) + 5cos(x) = 4, sin(2x) = 2cos^2(x)
-
- Find the equation of the curve
by burnbird16 on Sun Aug 22, 2010 12:50 pm - 7 Replies
- 2741 Views
- Last post by burnbird16
on Sun Aug 22, 2010 11:26 pm
- Find the equation of the curve
-
- Finding the tangent at a certain point on a circle
by burnbird16 on Sun Aug 22, 2010 3:23 am - 3 Replies
- 1679 Views
- Last post by stapel_eliz
on Sun Aug 22, 2010 7:15 pm
- Finding the tangent at a certain point on a circle
-
- (log x)^3= log x^3
by darovitz on Sat Jul 17, 2010 11:07 pm - 1 Replies
- 1253 Views
- Last post by car.man
on Sat Jul 17, 2010 11:26 pm
- (log x)^3= log x^3
-
- Arctangent confusing to me
by AmySaunders on Fri Jul 09, 2010 7:44 pm - 4 Replies
- 1186 Views
- Last post by Martingale
on Mon Jul 12, 2010 11:22 pm
- Arctangent confusing to me
-
- Find the length of 2 sides of a triangle
by kwikkarl65 on Sun Jul 11, 2010 4:11 am - 1 Replies
- 785 Views
- Last post by stapel_eliz
on Sun Jul 11, 2010 1:25 pm
- Find the length of 2 sides of a triangle
-
- what's the period of this : f(x)=Asin(wx+k)-Bcos(ux+J)
by TimeSwing on Wed Mar 10, 2010 3:30 am - 1 Replies
- 1157 Views
- Last post by jk22
on Sat Jun 26, 2010 11:03 am
- what's the period of this : f(x)=Asin(wx+k)-Bcos(ux+J)
-
- prove P=VI for V=5sinwt, I=10sin(wt-x),p=25(cosx-cos(2wt-x))
by vgreen74 on Sat May 22, 2010 3:07 am - 6 Replies
- 1659 Views
- Last post by vgreen74
on Thu Jun 10, 2010 10:06 pm
- prove P=VI for V=5sinwt, I=10sin(wt-x),p=25(cosx-cos(2wt-x))
-
- establishing identities with ^3 and ^4 in them
by bikeman on Thu Jun 10, 2010 12:07 am - 3 Replies
- 1157 Views
- Last post by bikeman
on Thu Jun 10, 2010 4:20 pm
- establishing identities with ^3 and ^4 in them
-
- Help proving a trig identity?
by Jiremi on Mon May 24, 2010 1:46 pm - 4 Replies
- 1185 Views
- Last post by Jiremi
on Wed May 26, 2010 1:46 pm
- Help proving a trig identity?
-
- Reference Angle Section Question
by hiroze on Sat Apr 17, 2010 11:50 pm - 1 Replies
- 1926 Views
- Last post by stapel_eliz
on Sun Apr 18, 2010 11:32 am
- Reference Angle Section Question
-
- Evaluation Equations & Inequalities for Trig Functions/Graph
by hiroze on Fri Apr 16, 2010 10:56 pm - 7 Replies
- 4958 Views
- Last post by stapel_eliz
on Sun Apr 18, 2010 11:29 am
- Evaluation Equations & Inequalities for Trig Functions/Graph
-
- Basic trigonometric identities
by jazz98 on Thu Apr 15, 2010 6:49 am - 1 Replies
- 770 Views
- Last post by mathnoob
on Thu Apr 15, 2010 10:59 am
- Basic trigonometric identities
-
- Solving trigonometry algebraically
by richie on Fri Apr 02, 2010 3:05 pm - 2 Replies
- 1171 Views
- Last post by richie
on Sat Apr 03, 2010 4:38 am
- Solving trigonometry algebraically
-
- Need help with Trig Sum Formulas Question
by gmorrow2 on Fri Mar 26, 2010 11:55 pm - 1 Replies
- 871 Views
- Last post by mathnoob
on Sat Mar 27, 2010 11:54 am
- Need help with Trig Sum Formulas Question
-
- Trigonometric Identities
by jazz98 on Wed Mar 24, 2010 1:55 pm - 1 Replies
- 877 Views
- Last post by midas
on Wed Mar 24, 2010 5:21 pm
- Trigonometric Identities
-
- Find the exact value of sin17pi/6...
by starsound on Sat Jan 30, 2010 10:09 pm - 1 Replies
- 2041 Views
- Last post by nona.m.nona
on Sun Jan 31, 2010 1:00 pm
- Find the exact value of sin17pi/6...
-
- Solving: A sin (theta) + B cos (theta) + C = 0
by cagey on Mon Dec 07, 2009 6:11 am - 1 Replies
- 2325 Views
- Last post by stapel_eliz
on Mon Dec 07, 2009 1:31 pm
- Solving: A sin (theta) + B cos (theta) + C = 0
-
- Help with ballistics formula
by standardtoaster on Tue Nov 24, 2009 5:40 pm - 2 Replies
- 1501 Views
- Last post by standardtoaster
on Sun Nov 29, 2009 12:45 am
- Help with ballistics formula
Forum permissions
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum