# Questions on Algebra: Trigonometry answered by real tutors!

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 Algebra: Trigonometry Solvers Lessons Answers archive Quiz In Depth

 Question 220723: Find all solutions to the equation. Use a lower-case n to denote an arbitrary integer; separate your answers with commas; use the most compact expressions possible. cot(x) + 1 = 0 ; Click here to see answer by stanbon(57299)

 Question 220794: find the antiln(-0.049) to the nearest ten thousandth Click here to see answer by Alan3354(30993)

 Question 221128: i am not a student, but have a geodesic dome build project under way. I am looking to find a radius R of a known chord c and rise m. i am using i can see the Pythagoras in the top right of the equation. I just dont understand the relationship of that to R. it seams to be a 2 to 1 ratio. is there an established ratio between the sum of the squares of the rise and half the chord to the arcs radius? Click here to see answer by Alan3354(30993)

 Question 221854: 1.What is the answer to X^2+x+2=0 using complex number system? 2. what is the real solution of the equation by factoring? x^3=6x^2-9x-54=0 Click here to see answer by Alan3354(30993)

 Question 222093: Time of Descent: A submarine traveling at 240 mph is descending at an angle of depression of 5 degees. How many minutes, to the nearest tenth, does it take the submarine to reach a depth of 80 feet? Click here to see answer by Alan3354(30993)

 Question 222367: I just need an example on how to do one problem and then I will work on the other problems myself. Thank you in advance. Graph each function. Identify the domain and range. f(x)=[[x+1]] Click here to see answer by stanbon(57299)

 Question 222513: How do I graph a peicewise function of y= {x+4 if x is less than or equal to -2 -x, if x > -2 I really need help, thanks! Click here to see answer by jsmallt9(3296)

 Question 222601: How do I solve this problem (csc x - 1)(csc x + 1) Click here to see answer by chibisan(131)

 Question 223391: I am having trouble solving the following problem 1/A= 1/b + 1/c A= 3 B= 5 Find c So, 1/3=1/5+1/c Those are all fractions. what should I do? Click here to see answer by Earlsdon(6287)

 Question 223721: cosecant theta + cotangent theta * cosecant theta - cotangent theta = 1 Click here to see answer by jsmallt9(3296)

 Question 224269: Determine the quadrant in which θ lies given cotθ < 0 ,cscθ > 0. I know its the 2nd quadrant but can you tell/show me why? Click here to see answer by Alan3354(30993)

 Question 224355: Find an equation of the line in point slope form that passes through (4,3) and is parallel to the line 3x - y = 7. i go to a correspondance school and cant figure out how to do this. Click here to see answer by Alan3354(30993)

 Question 224422: I need help verifying trid identities. The problem is (1 - sinx)/(1 + sinx) = (secx - tanx) squared. I multiplied by 1 - sin and got cos squared on bottom, then i got stuck. Click here to see answer by Alan3354(30993)

 Question 224457: which of the following trigometric wquations is false for all of x? sin x= 2/ sqroot of 5 tan x= -100 sex x = sqroot of 3/ 7 please show work? Click here to see answer by Alan3354(30993)

 Question 224461: what is the period of the following function? y=2tan(3x-pie/2) 1. 1 2. pie 3 pie/3 4. pie/2 5. 2pie/3 please show work and thankyou for your help v/r, bobby Click here to see answer by Alan3354(30993)

 Question 225233: a wire 120 meters long on a angle of 41 degrease is going to the top of a tower. what is the height of the tower Click here to see answer by chibisan(131)

 Question 225205: 2 sin 0 negative 1 equals 0 to the equation in the interval from 0 to 2 pie Click here to see answer by chibisan(131)

 Question 225764: given tangent of theta is 2. use trigonometric identities to find the exact value of cot( 90 degreess minus theta). Click here to see answer by Alan3354(30993)

 Question 225831: Given that sinA=1/2 , find the vlue of sinAcos(90degree-A). im lost.. Click here to see answer by chibisan(131)

 Question 226506: I need to solve the following equation for exact solutions over the interval [0,360]. csc(2x) tan x = 2tan x Click here to see answer by Alan3354(30993)

 Question 225799: given tangent of theta is 2. use trigonometric identities to find the exact value of cot( 90 degreess minus theta). Click here to see answer by chibisan(131)

 Question 226838: the formula used to convert temperature measurements form degreess Celsius (C) to degrees Fahrenheit (F) is shown below. F=9/5C+32 What is the Fahrenheit equivalent of 30 degrees celsius? Click here to see answer by rfer(12657)

 Question 226835: A local convenience store determines it's cost by using the following formula, where C is the costs and h is the number of hours per day that the store is open. C=50h-150 How many hours must the store be open to have the costs equal \$800? Click here to see answer by rfer(12657)

 Question 226830: What is the value of x in this equation? 2/5x+4=16 Click here to see answer by rfer(12657)

 Question 220902: find two values of theta, cos theta=square root of 2 divided by 2 Click here to see answer by chibisan(131)

 Question 31257: tan theta + cot theta = 1 over the sin theta times cos theta It asks me to: "Verify the Identity. Justify each step." Click here to see answer by chibisan(131)
 Question 31257: tan theta + cot theta = 1 over the sin theta times cos theta It asks me to: "Verify the Identity. Justify each step." Click here to see answer by jsmallt9(3296)

 Question 226943: find all real values of x such that f(x)=0: f(x)=x^3-x Click here to see answer by chibisan(131)

 Question 33858: cos theta = 5/12 and tan theta is negative, find the exact valcue for sin theta. Click here to see answer by chibisan(131)
 Question 33858: cos theta = 5/12 and tan theta is negative, find the exact valcue for sin theta. Click here to see answer by jsmallt9(3296)

 Question 226999: solve 2cosx - 3cosxsin^2x = 0 , x is more than 0 and less than pi Click here to see answer by chibisan(131)

 Question 228250: Help me solve this word problem please. "A freight train and a diesel train left at the same time. The trains traveled in opposite directions. The diesel train traveled 10km/h faster than the freight train. After one hour they were 140 km apart. Find the freight train's speed. Click here to see answer by rfer(12657)

 Question 228233: How do I solve this word problem? " A new car was advertised for 12.5% off original price. The sale price was \$14,599. What was the original price? Click here to see answer by JenniferTutors(83)

 Question 228303: how do you verify the idenity of secX-sinXtanX=cosX Click here to see answer by user_dude2008(1861)