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April 21, 2014

Search: Trig/Algebra II

Number of results: 82,866

Algebra II/Trig
No, Problem! Thank you so much for the answer!
Thursday, August 7, 2008 at 6:52pm by David

Algebra II/Trig
How did that 4 get up top though?
Thursday, August 7, 2008 at 6:52pm by Damon

Algebra II/ Trig
Whay is A 152deg? Why not 87 deg?
Saturday, March 14, 2009 at 11:48am by bobpursley

Algebra II/ Trig
The procedure that I did is correct just the math is incorrect...is this what you are telling me?
Saturday, March 14, 2009 at 11:48am by Sha

11th grade math algebra 2 trig
This is algebra II? Let AB be the number. A-6=B A*10+B-36=B(10)+A
Thursday, October 9, 2008 at 9:37pm by bobpursley

Algebra II/Trig
Simplify: (n/4)/(n/m) As my answer I got: 4m Is this response correct? If not, please let me know what I did wrong.
Thursday, August 7, 2008 at 6:52pm by David

Algebra II/ Trig
Ganon, giving answers seldom helps a student, at least in my experience.
Saturday, March 14, 2009 at 11:48am by bobpursley

trig
sin positive, quad I and II Tan negative, Quad II, IV Quad II
Tuesday, June 11, 2013 at 7:59pm by bobpursley

trig
For the second, draw you triangle in quadrant II hypotenuse = 3 , opposite = 1 x^2 + 1 = 9 x = ±√8 or ±2√2 , but we are in II, so use x - -2√2 cosØ = -1/3 tanØ = - 1/2√2 ---> cotØ = -2√2 I don't know how you possibly got your answers you have ...
Thursday, July 26, 2012 at 11:23pm by Reiny

Algebra 2 / Trig
X = appr. 98.45° or X = 261.55° The first of these in in quadrant II, the second is in III, thus they are not coterminal.
Sunday, May 15, 2011 at 2:44pm by Reiny

Algebra II/Trig
Simplify: 1/5(-5a^2b^3)^2(abc)^4 How do you simplify this. How does the "-5" play a role in this? how would you get 1/5 of "-5"
Thursday, July 31, 2008 at 2:18pm by Davmat

Algebra II/Trig
1/5(-5a^2b^3)^2(abc)^4 = 1/5[(-5)^2(a^2)^2(b^3)^2][(a^4)(b^4)(c^4)] = 1/5[25a^8b^10c^4] = 5(a^8)(b^10)(c^4) 1/5 of "-5" would be -1 but you have to do the powers (exponents) before you do the division or multiplication
Thursday, July 31, 2008 at 2:18pm by Reiny

Algebra II/ Trig
i don't know can you explain step by step
Saturday, March 14, 2009 at 11:48am by Sha

Algebra II/ Trig
Huh? cosA=.05 A= arccos.05 Use your calculator. Think. When is cosine of an angle near zero?
Saturday, March 14, 2009 at 11:48am by bobpursley

Algebra II/Trig
Yes, that is correct. Thank you for using parentheses to clarify the order of operations. Most students who post here just don't understand the importance of using them.
Thursday, August 7, 2008 at 6:52pm by drwls

trig
I hope you know the CAST rule, telling you were each of the trig functions is either + or - tanx + 1 = 0 tanx = -1 so the angle x must be in II or IV the angle in standard position is 45º, some call it the related acute angle. in II x must be 180+45 = 135 in IV x must be 360-...
Thursday, May 1, 2008 at 4:31pm by Reiny

Trig
sin Ø = .6 = 6/10 = 3/5 you should recognize the famous 3-4-5 right-angled triangle. so in quadrant II, construct your right-angled triangle in quadrant II sinØ = opposite/hypotenuse = y/r y = 3, r = 5 and in II, x = -4 so ... sinØ = 3/5 , csc Ø = 5/3 cosØ = -4/5 , sec Ø = -5/...
Saturday, February 1, 2014 at 10:28pm by Reiny

trig
If secØ < 0 then cosØ<o and the cosine is negative in II and III given tanØ = -4/3, and the tangent is negative in II and IV so Ø must be in II I will assume you want to find sin(Ø + π/6) , (the + sign is on the same key as = , you probably did not hit the shift key...
Wednesday, December 7, 2011 at 7:39pm by Reiny

pre-calculus
@Adam: if these kinds of problems are hard for you to understand (i know they are for me)try algebra-dot-com. Type your question in the google custom search box. They have some problems in the archives. If they don't have the ones you're looking for, go back to the homepage, ...
Sunday, April 22, 2012 at 7:02pm by Anonymous

Algebra II
Please do not confuse me by posting the same problkem again and again Algebra II - Damon, Monday, July 4, 2011 at 3:51pm x , f(x) -5 , -1/3 -4 , -1/2 -3 , -1 -2.5 , - 2 -2 undefined denominator of zero -1.5 , +2 -1 , +1 0 , +1/2 1 , +1/3
Monday, July 4, 2011 at 3:50pm by Damon

trig
Find tanx if sinx = 3/4 and x is in quadrant II.
Tuesday, October 11, 2011 at 1:45pm by Amber

Algebra
elimination method means to eliminate one of the variables.let us eliminate s. 3r - 5s = 6 ---I 5r + 3s = 44 --II as a thumb rule multily eq I by 3 (coef. of s in eq II) and multiply eq II by 5 (coef. of s in eq II) 9r - 15s = 18 ---I 25r +15s = 220 --II By vertical addition ...
Monday, November 23, 2009 at 9:28pm by Anonymous

trig
cos A = -4/5 for angle A in Quadrant II, find sin 2A
Thursday, January 20, 2011 at 2:55am by Anonymous

trig
cos A = -4/5 for angle A in Quadrant II, find sin 2A
Thursday, January 20, 2011 at 2:55am by Anonymous

Alg. II/Trig
If m and n are real numbers, i^2=-1, and (m-n)-4i=7+ni, what is the value of m?
Friday, November 18, 2011 at 1:11am by Lily

Algebra II/Trig
solve each inequality: 1-2t>-5 and the answer is: t<3 because you subtract one form both sides and get -2t>-6 and thats really positive and divide by 2 and thats where the three comes from ... but why does the > symbol change to < ?!
Wednesday, September 10, 2008 at 9:27pm by Mary

trig
Given that sin = 3/5 and lies in quadrant II, find the following value. cos
Wednesday, January 20, 2010 at 10:22am by will

Trig
Find sin2theta, cos2theta if csctheta=13/12 and lies in quadrant II. Thank you!
Wednesday, June 13, 2012 at 2:06am by Sara

Alg II/Trig
the equation must of the form x = ay^2 sub in the point (12,6) to find a
Sunday, February 22, 2009 at 5:43pm by Reiny

trig
405 I THINK I *'S 15 BY 27 AND GOT 405. NOW THAT IVE HELPED YOU WITH TRIG CAN YOU HELP ME WITH INTRODUCTORY ALGEBRA
Saturday, October 16, 2010 at 4:00pm by Alicia

Math Trig Find Quadrant I II III IV
In which quadrant is the terminal side of angle A? A = -5π/6 a. Quadrant III b. Quadrant I c. Quadrant II d. Quadrant IV
Saturday, June 8, 2013 at 10:49pm by Hello

trig Elev. & Depress part ii
as usual, draw a diagram. If the tree has height h, (h-4.5)/55 = tan61°
Monday, February 4, 2013 at 4:09pm by Steve

Trig
given that sinx=3/4 and cosy=-5/13 and both x and y are in quadrant II, find the exact value of cos(x-y)
Sunday, March 2, 2014 at 5:54pm by Blaire

geometry
Use the following statements to answer questions 2 and 3. I. If it is warm out and does not rain, then i will go to the beach. II. If i order strawberry or cookies and craam ice cream then i will be happy. III. If i go to the party, then i will see Fred. 2. Which of the above ...
Friday, October 26, 2007 at 2:32pm by Haiden

Someone said its English... but its geometry
Use the following statements to answer questions 2 and 3. I. If it is warm out and does not rain, then i will go to the beach. II. If i order strawberry or cookies and craam ice cream then i will be happy. III. If i go to the party, then i will see Fred. 2. Which of the above ...
Friday, October 26, 2007 at 3:15pm by Haiden

algebra/trig
1.Find the domain f(x)=ã(x^(2)-9) 2. Find all six trig functions for (-3,4)
Wednesday, June 8, 2011 at 11:27pm by Mike

math-TRIG
1. Which angle measure is consistent with all of the following criteria? (i) The reference angle is 40°. (ii) The angle is more than one revolution. (iii) The angle's terminal side is in Quadrant II. (iv) The angle isn't positive. A. –580° B. –500° C. –220° D. 500...
Saturday, April 28, 2012 at 1:46pm by Damon

Trig
Use "All Students Take Calculus" to find which of the functions are positive in which quadrant. The positive quadrants are for: S|A ---- T|C To find which quadrant will have sec<0 and cot<0, you look up the quadrant where cos<0 and tan<0. For cos<0, it will be ...
Thursday, October 29, 2009 at 4:31pm by MathMate

trig
For each expression in column I, choose the expression from column II to complete an identity: Column I Column II 1. -tanxcosx A. sin^2x/cos^2x 2. sec^2x-1 B. 1/sec^2x 3. sec x/cscx C. sin(-x) 4. 1+sin^2x D.csc^2x-cot^2x+sin^2x 5. cos^2 x E. tanx I figured #1 is C, #2 is A, ...
Saturday, March 19, 2011 at 9:52pm by gin

trig
The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s= 2 sin pi t + 3 cos pi t, where t is measured in seconds. (a) Find the average velocity during each time period: (i)[1,2] (ii) [1,1.1] (iii) [1, 1....
Tuesday, September 23, 2008 at 8:40pm by Sarah

Algebra II
I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? Also, someone said yes, but I'm wondering if it suppose to have anything else done to it-it seems way too easy the ...
Thursday, September 22, 2011 at 6:32pm by Jessica

Trig/Algebra II
(3+√2)/(3-√2) (3+√2)*(3+√2)/(3-√2)(3+√2) (9 + 6√2 + 2)/(9-2) (11 + 6√2) / 7 it's A.
Thursday, October 27, 2011 at 1:35am by Jai

trig
Ok, so im brand new at trigonometry. If i have a right triangle with an acute angle of 30° an opposite side of 4 and a hypotenuse of x how do ii find x
Monday, May 30, 2011 at 7:55pm by maya

trig
Suppose that the point (x,y) is in the indicated quadrant. Decide whether the given is positive or negative. 25.) II, x/r 26.) III, y/r 27.) IV, x/y
Wednesday, January 9, 2013 at 5:33pm by Emili

help me its urgent
Consider the following student errors. After each error, state: i) What the mistake is. ii) Why you think it has been made. iii) How you would explain and correct the mistake with a student. a) I am a secretary for five years. i) ii) iii) b) I have eat breakfast. i) ii) iii) c...
Thursday, December 2, 2010 at 4:18am by rahila

trig
in Q II y is positive and x is negative sin x = 3/4 means that y = 3, r = 4, x = -sqrt(7) So, tan = y/x = -3/sqrt(7)
Tuesday, October 11, 2011 at 1:45pm by Steve

Math - Advanced Algebra
if -1 < u < 0 < v < 1, which of the following in qualities could be true? I. u/v < -1 II. -1 < u/v < 0 III. u/v > 0 A) I only B) II only C) I and II only D) I and III only E) I, II and III
Saturday, September 7, 2013 at 7:45pm by Venus

Trig
given sin(4x)=5/13 in Q II find Tan(2x) and cos(2x)
Wednesday, February 18, 2009 at 3:35pm by Hayden

science
Which of the following properties increase with increasing atomic number for fluorine and chlorine? I. melting point of the elements (yes) II. boiling point of the hydrogen halides A) I only B) II only C) Both I and II D) neither I nor II I think it's A - is that right?
Saturday, January 1, 2011 at 6:07pm by i love chem

trig
hoW to evaluate these if cos=-12/13, A in Q II and cot B =5/12, B in Q III A) Sin^2 A (the sign ^ is power of)
Monday, August 17, 2009 at 10:29am by cheery

trig
Given that sin theta= 3/5 and the terminal side is in quadrant II, find tan (pi/2 - theta)
Tuesday, October 11, 2011 at 8:06pm by Ryan

chemistry
For the following: i) H3PO4 > H3AsO4 > H3SbO4 ii) H2Te > H2Se > H2S > H2O iii) HCl > HBr > HI iv) SbH3 > AsH3 > PH3 > NH3 The order of acidity is correct for which series? 1. ) all are correct 2. ) i and ii 3. )i, ii and iv 4. ) ii, iii 5. ii, iv...
Tuesday, November 24, 2009 at 2:32pm by bob

Calculus
Let f be defined as follows, where a does not = 0, f(x) = {(x^2 - 2a + a^2) / (x-a), if x does not = a 5, if x = a Which of the following are true about f? I. lim f(x) exists as x approaches a II. f(a) exists III. f(x) is continuous at x = a. A. None B. I, II, and III C. I ...
Saturday, October 22, 2011 at 6:34pm by Mishaka

Trig
the sine of an angle is 0.6. the constraint is the angle lies in quadrant II. how do I figure out what x is to solve the six functions?
Saturday, February 1, 2014 at 10:28pm by math

trig
Determine in which quadrant you are in, then use the CAST rule e.g. sin(-245°) = sin( 115°) , (going 115 counterclockwise is the same as going 245° clockwise ) 115° is in quad II in quad II , sine is positive, so sin(-245°) is positive you can always check with your calculator...
Thursday, January 26, 2012 at 11:14pm by Reiny

trig
6π/8 radians = 135° 135° is in quadrant II The reference angle of 135° is 45° 45° is found in the 1-1-√2 right-angled triangle In quadrant II , the sine and cosecant are positive so sin (6π/8) = 1/√2 , csc (6π/8) = √2 cos (6π/8) = -1/&#...
Monday, October 17, 2011 at 9:01pm by Reiny

Chemistry
Which of the following is/are present in a reagent bottle labeled 1.0 M H2SO4? I. H2SO4 II. HSO4- III. SO4-2 A. I only B. I and II C. II and III D. I, II, and III
Saturday, April 13, 2013 at 2:35pm by Anna

Algebra II
cosØ = -√3/2 1. find the reference angle (using the positive result √3/2 , use inverse cos to get and angle of 30° ( Make yourself familiar with the ratio of sides of the 30-60-90 triangle) 2. Where is the angle Ø ? Since the cosine is negative in II and III in II...
Friday, September 2, 2011 at 8:48pm by Reiny

Algebra II
Two algebra II questions... simple, i believe? give a numerical example to show that subtraction is not commutative. and give a numerical example to show that subtraction is not associative. thanks(:
Wednesday, August 18, 2010 at 10:08pm by Brian

HELP!
Next year (sophomore year) I'm taking the following courses: Honors Algebra II/Trig Spanish III Health AP Biology Honors English AP World History Is AP Bio and world history hard? or no it's not just the exam. Please tell me because this is my first year taking AP.
Monday, April 14, 2014 at 8:00pm by Erika

Calculus (Limits)
Let f be defined as follows, where a does not = 0, f(x) = {(x^2 - 2a + a^2) / (x-a), if x does not = a 5, if x = a Which of the following are true about f? I. lim f(x) exists as x approaches a II. f(a) exists III. f(x) is continuous at x = a. A. None B. I, II, and III C. I ...
Saturday, October 22, 2011 at 7:30pm by Mishaka

trig
so Ø must be in quadrant II or III , but in II the sine would be positive, so Ø is in III get the "angle in standard position" by using +.204 sin^-1 (.204) = 11.77° so in III, the angle is 180 + 11.77 = 191.77° = 191.8° correct to one decimal check with your calculator: sin ...
Tuesday, January 8, 2013 at 10:58pm by Reiny

algebra
let's write the old and new equations: (i) 6x+3y=12 (ii) 6x+3y=36 notice that they have the same slope, thus the new line (ii) is parallel to the original line (i). also , transforming this into slope-intercept form, they become (i) y = -2x + 4 (ii) y = -2x + 12 the y-...
Thursday, April 14, 2011 at 5:36pm by Jai

trig
The sine is positive in I and II quadrant,negative in III and IV quadrant. The tangent is positive in I and III guadrant,negative in II and IV quadrant. If sin(theta)>0 sine is positive If tan(theta)<0 tangent is negative Only quadrant where sine is positive,and tangent ...
Saturday, May 14, 2011 at 11:33am by Anonymous

chemistry
A student determines the cobalt(II) content of a solution by first precipitating it as cobalt(II) hydroxide, and then decomposing the hydroxide to cobalt(II) oxide by heating. How many grams of cobalt(II) oxide should the student obtain if her solution contains 46.0 mL of 0....
Monday, March 3, 2014 at 4:30pm by jen

trig
you should recognize the 3,4,5 and the 5,12, 13 right-angled triangles, so if sinx = 4/5, then cosx = -3/5 in II if cosy = -1213, then siny = 5/13 in II to have this type of question, you must also have come across the expansions for sin(A+B), cos(A-B), etc. I will do cos(x-y...
Sunday, October 24, 2010 at 11:23pm by Reiny

trig
tanØ = -1 angle in standard position is 45° (tan^-1 (1) = 45° ) the tangent is negative in quads II and IV so Ø = 180-45 = 135 or Ø = 360-45 = 315° check: tan135 = -1 and tan315 = -1 sin Ø/2 = 1/2 angle in standard postion is 30° and the sine is positive in I and II Ø/2 = 30° ...
Saturday, March 17, 2012 at 6:00pm by Reiny

trig
Let be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).
Wednesday, May 11, 2011 at 9:08pm by Johnny

trigonometry
given that sin alpha/2 = 2/3, and that alpha/2 is in quadrant II, determine the exact values of all trig functions for alpha.
Sunday, April 15, 2012 at 12:06pm by kiko

Business law
Which of the following statements are true? I. Federal law does not provide any right of workers to bargain collectively. II. It is not an unfair labor practice for an employer to refuse to bargain with a duly elected employee union. a. I only b. II only c. Both I and II d. ...
Tuesday, June 30, 2009 at 2:28pm by Anonymous

statistic
which is true about the response variable? i this used to be called the dependent variable. ii when graphing the data, the response variable is plotted along the x-axis only I only ii both I and ii neither I or ii
Tuesday, January 14, 2014 at 2:14pm by helen

Trig
plugging in the trig values, you have .1051x = .2309(1.1-x) Have you forgotten your algebra I? .1051x = .2540 - .2309x .3360x = .2540 x = 0.756
Monday, October 15, 2012 at 3:27pm by Steve

Alg II/Trig
A parabola has a vertex at (0,0); a horizontal axis; and the point (12,6) is on the parabola. Write the equation of the parabola in standard form.
Sunday, February 22, 2009 at 5:43pm by Sara

trig
if the cotØ < 0 then tanØ < 0 then Ø is in either II or IV and since the cosØ = √2/2 (positive) Ø is in I or IV so Ø is in IV the angle in standard position is 45° (since cos45° = √2/2) you should know the trig ratios of the 45° by heart. so sinØ = -√2/...
Wednesday, June 9, 2010 at 7:04pm by Reiny

trig/precalculus
Hmm. By the time you get to trig, a little algebra I should not throw you. M w cosx = w sinx M = w sinx / w cosx = sinx/cosx = tanx Where did you get stuck on the way?
Tuesday, December 13, 2011 at 12:31am by Steve

College Algebra
You are not ready for algebra II. You need a tutor quickly.
Wednesday, November 18, 2009 at 7:41pm by bobpursley

trig
Come on, guys. By the time you take trig, a little algebra shouldn't be a problem . . . an isosceles triangle has two equal sides. the perimeter is the sum of all the sides 2x+9 + 2x+9 + 3x = 60 7x + 18 = 60 x = 6
Monday, November 14, 2011 at 12:26am by Steve

Grammar
with = not algebra for = not trig However, "for" version is a little awkward. "I want to take algebra instead of trigonometry" would be better.
Thursday, August 29, 2013 at 2:16pm by PsyDAG

trig
L ii i i i i i i i i A i i i i i i i i i i 4000 miles i i i i E ii right triangle have to find side EL. The range of a lighthouse is the maximum distance at which its light is visible. In the figure, point A is the farthest point from which it is possible to see the light at ...
Thursday, October 27, 2011 at 6:25pm by Taylor

Chemistry
Which of the following does form a Group II cation? lead iron cobalt nickel How do you figure this one out? You must know what is in group II. Fe, Co, and Ni are in group III. Pb is in both group I and group II. Pb ppts as the chloride in group I and as the sulfide in group II.
Tuesday, February 20, 2007 at 11:47am by Chemistry

Calculus, check my answers, please? :)
Okay, so I think these are right, but I would appreciate if someone could check them and tell me if something is wrong and what the right answer is. I'd also appreciate an explanation if possible. :)Thank you! 7. Given that f(x)={x^3 if x ≥ 0 {x if x < 0 which of the ...
Wednesday, October 2, 2013 at 11:15pm by Samantha

chemistry
Which of the following would lower the vapor pressure of a sample of butanol in a closed container? I) decreasing the temperature of the sample II) decreasing the size of the container III) draining off some of the liquid a. I, II and III b. I and II c. II and III d. I and III...
Friday, January 28, 2011 at 7:31pm by john

Algebra II ??
This is algebra? 3.60 / 8 = ? price per pound
Thursday, December 3, 2009 at 7:43pm by Ms. Sue

Trig/Algebra II
(3+√2)/(3-√2) is equivalent to: a. (11+6√2)/ 7 b. (11-6√2)/ 7 c. 11/7 d. 7/ (11+6√2)
Thursday, October 27, 2011 at 1:35am by Lily

trig
Let (theta) be an angle in quadrant II such that csc(theta)=8/5 Find the exact value of tan(theta) and cos(theta).
Tuesday, May 10, 2011 at 9:30pm by andy

trig
Let (theta) be an angle in quadrant II such that csc(theta)=8/5 Find the exact value of tan(theta) and cos(theta).
Tuesday, May 10, 2011 at 9:31pm by andy

Trig
Let (theta) be an angle in quadrant II such that sec(theta) -4/3 . Find the exact values of cot (theta) and sin (theta).
Wednesday, May 11, 2011 at 9:15pm by Johnny

mth, trig
Given cos a=-7/25 in quadrant II , and sin b=-12/13, in quadrant IV , find cos(a+b) and sin2a
Wednesday, April 18, 2012 at 11:10am by shay

trig
Isn't cosine negative in quadrant II? memorize this: Sin^2 X + Cos^2 X=1 find cosine X, you know sin X as 3/5
Wednesday, January 20, 2010 at 10:22am by bobpursley

chemistry
the Ka for acetic acid, HC2H3O2, is 1.8x10-5 at 25 deg. Celsius. In a .10 M solution of potassium acetate, which of the following are true? I. [HC2H3O2] = [OH-] II. [H+] = [OH-] III. [C2H3O2-] < .10 M a. I only b. II only c. III only d. I and II e. I, II and III What is ...
Sunday, April 22, 2007 at 8:05am by Anonymous

trig
think of the definition of inverse trig functions arcsin x is the angle Ø so that sinØ = x so let arcsin x = Ø then we have sin Ø = 1 so if sinØ = 1 and sinØ = x x = 1 (we could see that right away since something like sin(arcsin 30°) = 30° ) 2. 2 arcsin x = 1 arcsin x = 1/2 I...
Sunday, January 8, 2012 at 10:34am by Reiny

algebra ll
Have you considered simplfying each first? If you can't add these, you are in deep trouble in algebra II. Adding fractions is prealgebra forte.
Sunday, October 26, 2008 at 9:01pm by bobpursley

Trig
Find cos(s+t) if cos s= -1/2 and sin t= 3/5, s and t are in quadrant II. I got the answer to be -4/10 plus -3sqrt(3)/10. Is that right? Then a second problem was find sin (s+t) if sin s=2/3 and sin t=-1/3, sin is in quadrant II and t in quadrant IV. I got answer of 2sqrt(8/9) ...
Monday, May 3, 2010 at 10:15am by Anonymous

trig
Then sin x = 1/3 and x is in quadrants II I sketched a diagram, made my hypotenuse 3 and the opposite 1. then the adjacent is √8, using Pythagoras tan x = -1/√8 = -1/(2√2) or -√2/4 if rationalized.
Sunday, October 4, 2009 at 6:18pm by Reiny

correction - trig e-maths
Did not notice that y was supposed to be an obtuse angle, that would make y an angle in quadrant II and cosy = -5/13 make the necessary changes
Sunday, March 18, 2012 at 9:58am by Reiny

Trig
Sin theta=8/17, theta in Quadrant I, Cos X=-sqrt5/5 in Quadrant II
Friday, October 19, 2012 at 3:25pm by Javier

Height and distance
http://www.mathsisfun.com/algebra/trig-cosine-law.html
Friday, April 26, 2013 at 11:14am by Ms. Sue

Chemistry
Which of the following represents a pair of isotopes? Atomic Number Mass Number a. I 7 16 II 8 16 b. I 17 34 II 18 36 c. I 17 35 II 17 37 d. I 7 14 II 8 16 e. I 17 37 II 18 37
Tuesday, March 23, 2010 at 5:47am by Husy

trig Elev. & Depress part ii
You are 55ft from a tree. The angle of elevation from your eyes, which are 4.5 ft off the ground,to the top of the tree is 61 degrees. To the nearest foot, how tall is the tree?
Monday, February 4, 2013 at 4:09pm by Vannah

Trig
No, they are not 11π/12 is in quadrant II =π/12 is in IV
Tuesday, February 19, 2013 at 8:51pm by Reiny

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