i need some pre-calc help!?
962605
1. Find x to the nearest length\nWhat would x be if it is a right triangle with the cos angle at 32º,sin angle at 58º and a hypotenuse length at 10\n\ncos 32 = x/10\n\nSo x = 8.48\n\n2.Find the missing side lengths for x and y.\nthe triangle is a 30-60-90 and it has a hypotenuse of 8. the sin leg is x and the cos leg is y\n\nsin30=x/8\nx = 4\n\ncos30 = y/8\ny = 4√3\n\n3. a ladder 18 feet long makes an angle of 61º with the ground as it leans against a barn. How far up the side of the barn does the ladder reach?\n\nThe ladder leaning against the barn makes a right-angled triangle with a hypotenuse of 18.\n\nLet x be the height of the triangle. Then:\n\nsin61 = x/18\nx = 15.74 feet\n\n4. also, to make sure i did things correctly, is the Sec36º -.128? and is the cot60º the squareroot of 3 /3?\n\nNo, that is incorrect.\n\nsec 36 = 1/cos36 = 1.236\n\ncot60 = cos60/sin60 = (1/2)/(√3/2) = 1/√3\n\n5. Is sec 30º =2? \n\nsec30 = 1/cos30 = 1/sin30 = 2
101992
Here are some sites that have saved my behind.  :)\n\nhttp://integrals.wolfram.com/index.jsp\n\nhttp://www.calc101.com/webMathematica/integrals.jsp\n\nhttp://mcraefamily.com/MathHelp/CalculusTableOfIntegrals.htm
22859
Subract the two terms on the left giving:\n-2t < 16\n\nAdd 2t to both sides giving\n0 < 16 + 2t\n\nSubtract 16 from both sides\n\n-16 < 2t\n\nDivide both sides by 2\n\n-8 < t
435388
damnt i should have paid attention calculus...\n\nlet pam...pam...breat....dimension......carry the one.....as x approaches zero......carry  the two....hold on...\n\nthis could take a while.
635193
Drop me your email. I will do one and send it to you. Easier than explaining...just look at my formulas...will only take a minute...really...\n\nCheck your email\n\nIs what I gave you what you want?
17330
I compiled a list of great calc sites. You may want to check out MIT opencourseware too.
1002263
hope this helps\n\nhttp://www.thea.nesinc.com/ptmath.htm
895625
This may be unexpected, but a good site with the formulas you need.\n\nhttp://en.wikipedia.org/wiki/Trig
104175
f=thanx\ng=for\nx=the\ny=two\nz=points\n\nTell your teacher you need some help with your algebra.
444637
see this link\n\nhttp://library.thinkquest.org/20991/prealg/eq.html
154380
I posted these sources earlier to someone else who was looking for math help.\n\nGood Luck!!
278729
http://www.aaamath.com/ There you go!! Hope that helps.
878923
Make a program on your calculator.\nView the snippet in the link for code.
38090
Go to http://Hotmath.com
405573
you need to use some calculus.\nget an expression for the area \ndifferentiate it\nthen find when it is a maximum.
932261
hey there is a good website to check your work \nits www.webmath.com i use it all the time
55565
Your computer has a calculator built in.  Failing that, try long division.  You're gonna have to learn how to do it anyway.\n\nSheesh.