# Questions on Algebra: Trigonometry answered by real tutors!

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 Algebra: Trigonometry Solvers Lessons Answers archive Quiz In Depth

 Question 260857: what is the value of x if a triangle has a side x + 1 and x +3 and x Click here to see answer by Alan3354(30935)

 Question 261230: if one side of a triangle is double the other and the angles opposite these sides differ by 60. show that the triangle is right angled Click here to see answer by drk(1908)

 Question 261459: How do you find the cos of 55 degrees using the sum and difference identity? cos (x + y) = (cos x) (cos y) - (sin x) (sin y) and cos (x - y) = (cos x) (cos y) + (sin x) (sin y) I can't find 2 angles that add or subtract to get 55. Ex: 315 - 270 = 45 degrees, not 55 Click here to see answer by Edwin McCravy(8879)

 Question 261494: when finding the exact value of tan165 and you have split the number into 120+45, would you use the 30 degree or 60 degree for 120. like,sin 60 equals or sin30 equals Click here to see answer by jsmallt9(3296)

 Question 261726: A rectangular solid has a volume of 24 cubic decimeters. If the length,width,and height are all changed to 1/2 their original size, what will be the new volume of the rectangular solid? Click here to see answer by checkley77(12569)

 Question 261882: solve each of the following cos theta=-3sin theta 3cos^2theta=5-7sin theta Click here to see answer by drk(1908)

 Question 262061: given a triangle with a=8, c=41 degrees, and b=14 degrees, what is the lenght of c? round the answers to two decimals laces. Click here to see answer by richwmiller(9132)

 Question 262174: I have this problem and need the solution and an explanation for it: 0°<=[theta]<360°+cot[theta]=-1.4176[theta]=x {problem in brackets} The written form was this: "If 0deg <= [theta] <360deg and cot[theta] = -1.4176 then determine [theta] to the nearest tenth". Thank you, Steven Click here to see answer by Theo(3458)

 Question 262343: I'm solving horizontal curve where the radius is 4000m and the subtending angle is 19 degrees. I understand that the formula for CL is 2* Radius sin ( tetha/2). so is that 2*(4000m)sin 19 degrees from there how do i find the arc length S. Click here to see answer by Alan3354(30935)

 Question 262433: I am having a problem with this question...please don't just give me the answer, I would really like to know how to do it. Thanks f(theta)=3tan(theta)+sin2(theta), find f(pi/6) Click here to see answer by drk(1908)
 Question 262433: I am having a problem with this question...please don't just give me the answer, I would really like to know how to do it. Thanks f(theta)=3tan(theta)+sin2(theta), find f(pi/6) Click here to see answer by jim_thompson5910(28476)

 Question 262675: What is the exact value of the trigonometric function: csc 240 degrees? Click here to see answer by Theo(3458)

 Question 262709: how do you find the degree measure of theta if 0 degrees is less than or equal to theta and theta is less than or equal to 360 degrees if the sin of theta is .8706? Click here to see answer by Alan3354(30935)

 Question 262757: finding the six trigonometric functions of the angle theta. (-10/3, -2/3) Click here to see answer by drk(1908)

 Question 262830: Find an equation of the perpendicular bisector of the lina segment AB;A(2,1)B(-2,3) Click here to see answer by Alan3354(30935)
 Question 262830: Find an equation of the perpendicular bisector of the lina segment AB;A(2,1)B(-2,3) Click here to see answer by drk(1908)

 Question 263040: Refer to the graph of y = tan(x) to find the exact values of x in the interval [-Pi/2, 3*Pi/2] that satisfy the equation. Separate your answers with commas. (a) tan(x) = 0 ; x Click here to see answer by stanbon(57203)

 Question 263161: the length of one leg of a right triangle is 10 ft. the length of the hypotenuse is 2 feet longer than the other leg. find the length of the hypotenuse and the other leg the length of the hypotenuse=?? ft the lenght of the other leg=?? ft Click here to see answer by palanisamy(496)
 Question 263161: the length of one leg of a right triangle is 10 ft. the length of the hypotenuse is 2 feet longer than the other leg. find the length of the hypotenuse and the other leg the length of the hypotenuse=?? ft the lenght of the other leg=?? ft Click here to see answer by drk(1908)
 Question 263161: the length of one leg of a right triangle is 10 ft. the length of the hypotenuse is 2 feet longer than the other leg. find the length of the hypotenuse and the other leg the length of the hypotenuse=?? ft the lenght of the other leg=?? ft Click here to see answer by mananth(12270)

 Question 263185: Refer to the graph of y = sin(x) or y = cos(x) to find the exact values of x in the interval [0, 4*Pi] that satisfy the equation Click here to see answer by Alan3354(30935)

 Question 263601: 4-i is a solution of a quadratic equation with real coefficients. find other the solution. Click here to see answer by richwmiller(9132)

 Question 264217: A ladder leaning against a house makes an angle of 30 degrees with the ground. the foot of the ladder is 7 feet from the foot of the house. How long is the ladder to the nearest foot? Click here to see answer by mananth(12270)
 Question 264217: A ladder leaning against a house makes an angle of 30 degrees with the ground. the foot of the ladder is 7 feet from the foot of the house. How long is the ladder to the nearest foot? Click here to see answer by dabanfield(803)

 Question 264218: find the values of the six trigonmetric functions given that cos(theta) is 3/5 and theta terminates in Quadrant IV. Click here to see answer by stanbon(57203)

 Question 264228: i don't really understand how to do this problem. if you could please explain how to do it asap. thank you. Write the equation of the circle in center and radius form. State the center and the radius: x^2+y^2-2x+8y-10=0 Click here to see answer by stanbon(57203)
 Question 264228: i don't really understand how to do this problem. if you could please explain how to do it asap. thank you. Write the equation of the circle in center and radius form. State the center and the radius: x^2+y^2-2x+8y-10=0 Click here to see answer by dabanfield(803)

 Question 264227: What is the number of degrees in an angle whose radian measure is 7pi/12? Click here to see answer by Alan3354(30935)
 Question 264227: What is the number of degrees in an angle whose radian measure is 7pi/12? Click here to see answer by stanbon(57203)

 Question 264225: the two legs of a right triangle have lenghts of 15 inches and 8 inches. Find the measure of the smaller acute angle. I tried to do tan=opp/adj, is it on the right path? Click here to see answer by Alan3354(30935)

 Question 264223: The pendulum of a clock swings through an angle of 2.5 radians as its tip travels through an arc of 50 centimeters. Find the lenght of the pendulum, in centimeters. Click here to see answer by Alan3354(30935)

 Question 261382: HI I NEED HELP WITH Sin(X)-0.1Cos(X) = 0.567 Find the angle X Thanks M.samari Click here to see answer by Alan3354(30935)

 Question 265236: What are the coterminal angles of: 17pi/5 67pi/2 15pi/9 Click here to see answer by drk(1908)