# Questions on Algebra: Trigonometry answered by real tutors!

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 Algebra: Trigonometry Solvers Lessons Answers archive Quiz In Depth

 Question 237400: how do you verify cot theta tan theta = 1 Click here to see answer by solver91311(16897)

 Question 237369: what would an angle of look like? Click here to see answer by Edwin McCravy(8909)

 Question 237416: Find the reference angles "theta" or ϴ for the angles given below. Find the quadrants in which the angles lie. In addition, show all the steps for deriving the answer. 1. ϴ = 50° 2. ϴ = 120° 3. ϴ = 4. ϴ = 3.3 5. ϴ = 300° 6. ϴ = –145° Click here to see answer by Edwin McCravy(8909)

 Question 237518: I am trying to find the derivative of (1/x) I need to see how to get passed the step of putting (x+h) in and dividing everything by h. Any help is greatly apprieciated. Click here to see answer by stanbon(57361)

 Question 237520: How do you find the tangent and normal lines of something that starts out as x^2-4x and has a derivative of 2x-4 please help in the solving of this equation. Click here to see answer by solver91311(16897)

 Question 237560: Hi! I am having trouble with this question. please help me! 40 ft. radio antenna located on top of the building. 260 ft. from the building, the angle between the bottom of the antenna and the top is 13 deg. Find the height of the building. I would appreciate it a lot if you will include diagrams for this. Thanks a lot! Click here to see answer by Theo(3464)

 Question 237732: find all solutions of the equation in the interval [0,π): tan^2(x)+tan(x)=0 Click here to see answer by solver91311(16897)

 Question 237746: find the exact value by using a half-angle identity. sin 22.5degrees show your work. thanks! Click here to see answer by jsmallt9(3296)

 Question 237742: what is the exact value of cos 13pi/12 Click here to see answer by solver91311(16897)

 Question 238094: PLEASE HELP ME SOLVE THIS TRIGONIMETRIC FUNCTIONS: For the quadrant in which the following point is located, determine which of the functions are positive. (5,-7) a)sin b)cos c)tan d)sec e)csc f)cot Click here to see answer by Alan3354(30993)

 Question 238318: Hey! We started learning trigonometry a couple of days ago and I am having difficulty with it, I also have a quiz tomorrow. Please help me, here is the question: Find, to the nearest degree, the angle of elevation of the sun when a man 6 feet tall casts a shadow 4 feet long. Click here to see answer by Alan3354(30993)

 Question 238594: wat is the linear velocity of a point on a circle of a radius of 8 meters if the angular velocity is 10(pi) rad/sec Click here to see answer by rapaljer(4667)

 Question 238658: How many revolutions will a car wheel of diameter 60cm make as the car travels a distnace of 4km? Click here to see answer by ankor@dixie-net.com(15656)
 Question 238658: How many revolutions will a car wheel of diameter 60cm make as the car travels a distnace of 4km? Click here to see answer by Alan3354(30993)

 Question 238706: A tire for a compact car is 22 inches in diameter. If the car is travelling at a speed of 60 mi/hr, find to the nearest integer the number of revolutions the tire makes per minute. Click here to see answer by ankor@dixie-net.com(15656)

 Question 238707: The geographic and magnetic north poles have different locations. Currently, the magnetic north pole is drifting westward through 0.0017 radian per year, where the angle of drift has its vertex at the center of the Earth. If this movement continues, approximately how many years will it take for the magnetic north pole to drift a total of 5 degrees? Click here to see answer by jsmallt9(3296)

 Question 239303: Nancy jogs & walks to school each day. She averages 4km/h walking and 8km/h jogging the distance from home to school is 6km and she makes the trip in 1 hr. How far does she jog in a trip? Click here to see answer by stanbon(57361)

 Question 239784: Prove that cos^2 theta / (cot^2 theta - cos^2 theta) = 3 Click here to see answer by jsmallt9(3296)

 Question 239955: Solve sin 2x = 3 cos x for all values of x. Thanks a lot for your help! Click here to see answer by solver91311(16897)

 Question 240660: hi, I am taking a course on N3 maths. Can you help me with the angle of inclination. The question reads as follows:Determine th slope and angle of inclination of the line passing through points (-2;4) and (4;-1). To get the andwer calculate m= y2-y1/x2-x1 thus:m=-(5/6) I know m=tanθ so if the value of m=-5/6 how do i use my calculator to get the degree of the angle? The answer in the book is θ=140.2 degrees? So how do I get the answer 140.2 degrees???? Click here to see answer by vleith(2825)
 Question 240660: hi, I am taking a course on N3 maths. Can you help me with the angle of inclination. The question reads as follows:Determine th slope and angle of inclination of the line passing through points (-2;4) and (4;-1). To get the andwer calculate m= y2-y1/x2-x1 thus:m=-(5/6) I know m=tanθ so if the value of m=-5/6 how do i use my calculator to get the degree of the angle? The answer in the book is θ=140.2 degrees? So how do I get the answer 140.2 degrees???? Click here to see answer by jsmallt9(3296)

 Question 240698: Find the exact value using the half-angle identity for sin75? Click here to see answer by nyc_function(2733)

 Question 240737: in 1 week tom earned \$356.60 by working 36.35 hours. what was his hourly rate of pay to the nearest cent. write the apprioate equation and solve it Click here to see answer by Theo(3464)

 Question 240787: PLEASE HELP ME SOLVE THIS CIRCULAR FUNCTIONS AND THEIR GRAPH: The angular velocity of point on a circle with radius of 13 feet is 14(pi) radians per second.Find the speed of the point on the circle. HERE ARE THE POSSIBLE ANSWERS: a)2.9ft/sec b)3.4 ft/sec c)571.5 ft/sec Click here to see answer by Alan3354(30993)