Number of results: 20,178
if 10 students enter projects in the art show, how many different ways can they come in 1st, 2nd, and 3rd place? would you go 10^3 OR 10TIMES 3? This is not a trig question. Neither of those answers is correct. After making one of ten possible choices for first place, there ...
Thursday, January 18, 2007 at 9:28pm by Dom
I have a unit circle graph like the one at the top of a website (do a google search for 'unit circle trig functions' and click the second link, since I can't post links). I need to label the sine, cosine, tangent, secant, cosecant, and cotangent. I found several pictures that ...
Sunday, March 18, 2007 at 11:33pm by Chris
i have some problems doing trig the first one is: Show that cos(x/2) sin(3x/2) = ½(sinx + sin2x) i know that you are supposed to substitute all those trig function things in it but i kind of forgot how to the only that i can see substituting in is the double angle one for ...
Monday, April 30, 2007 at 5:42pm by jacob
math (final trig problem)
Solve for x on the interval [0,π/2): cos^3(2x) + 3cos^2(2x) + 3cos(2x) = 4 I havent done trig for a while so what exactly does that mean in solving for x on that interval and how would i go about doing that? Where are you getting these tough trig questions?? how about ...
Monday, April 30, 2007 at 10:33pm by jacob
Sorry, my original field was physics and my graduate degrees are in in engineering. Any high school student has more background in biology than I have.
Sunday, July 4, 2010 at 8:21pm by Damon
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!
Wednesday, June 25, 2008 at 5:25pm by amanda
Math - Solving Trig Equations
Start by recalling the most important identity. My math teacher calls this "the #1 Identity." sin^2(x) + cos^2(x) = 1 We want to simplify our trig equation by writing everything in terms of sine. Let's solve the #1 Identity for cos^2(x) because we have that in our trig ...
Wednesday, November 21, 2007 at 6:29pm by Michael
Okay, I got it, thanks Damon.
Sunday, June 22, 2008 at 3:28pm by Neutral
Since you did not use parentheses for your numerators and denominators, I spent most of my time figuring out what you probably mean (1 + sin x)/( cos x) + cos x/(1+sin x) = 2/cos x common denominator on left of (1+sin x) cos x [(1 +sin x)^2 +cos^2 x ]/common denom [ 1 + 2 sin ...
Tuesday, December 4, 2007 at 9:35pm by Damon
please show me again in trig way
Saturday, May 17, 2008 at 12:40pm by Doni --i didnt get this one can please show me the trig way a little bit more clrealy
yes, that is what I said. Cot 45 = 1/tan 45 = 1 I also did the other trig functions of 45 because I am sure you will need them.
Monday, May 19, 2008 at 6:32pm by Damon
Maths - Trig
Usually my first step in proving any trig identity is taking an arbitrary angle to see if it makes it true, say 45 degrees. Picking up from Damon's first line, your equation is tanx + cotx = 2/sinx for x = 45 degrees LS = 1+1 = 2 RS = 2/.707 which is not LS so the equation is ...
Thursday, February 19, 2009 at 1:21am by Reiny
Damon - trig
Damon, when I opened the page and started to answer this question, I left it alone to watch the end of the WorldCup football game, and when I resumed I did not refresh the page, thus did not see your answer was already posted.
Friday, July 2, 2010 at 4:12pm by Reiny
Sketch a graph If theta is between 0 and 180 then theta/2 is between 0 aand 90. Therefore in the first quadrant. In the first quadrant, all trig functions are positive. If theta is between 0 and 180 then negative theta is between 180 and 360 in the lower two quadrants, ...
Sunday, August 28, 2011 at 5:47am by Damon
Trig - Thanks Damon
Thanks for the help Damon. Much appreciated. Don
Saturday, December 17, 2011 at 5:12pm by Don
Trig - Thanks Damon
You are welcome :)
Saturday, December 17, 2011 at 5:12pm by Damon
Trig - Thanks Damon and Lindsey
Thanks a bunch
Tuesday, December 20, 2011 at 8:32pm by Don
tan(a-b) = [ tan a - tan b)/(1 + tan a tan b) You better learn those trig identities.
Tuesday, December 27, 2011 at 6:42pm by Damon
No, trig :) Draw a sketch, h is height of balloon over bridge tan 71 h/270 so h = 270 tan 71 = 784 then tan 54 = h/x where x is hor dist to other end from balloon x = h/tan 54 = 570 so total length = 270 + 570 = 840 meters
Thursday, January 26, 2012 at 1:50pm by Damon
Algebra and Trigonometry
Trig - Damon, Sunday, March 3, 2013 at 6:24pm East speed = 100 + 200 sin 45 = 241 North speed = 200 cos 45 = 141 speed = sqrt( 141^2 + 241^2) = 279 mph tan east of north = 241/141 so angle east of north = 60 degrees
Sunday, March 3, 2013 at 6:17pm by Damon