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Use Our Helpers Guide To Trigonometry

Trigonometry is everywhere! From simple everyday problems like figuring out distances (given a few angles and measurements), to the most complex navigational calculations you can imagine, you cannot run away from trigonometry. However, this ubiquitous math subject area is the bane of many students due to often perplexing problems like the ones shown in the examples below. Well, you need no longer scratch your head and drown in confusion. Our trained professionals are standing by, ready to give you the trigonometry help you need!

Let us take your trigonometry online class for you so that you can get that A-grade you need for your program. We can do as much or as little as you require, from covering everything (discussions, journal entries, papers, tests, assignments) to just providing trigonometry help in the form of a few pointers for your assignment or test. Just let us know what you would like done and in what manner, and we will take care of the rest!

Below are two worked examples to illustrate some key concepts, and to provide some trigonometry help gratis. For more specific help tailored to your assignment/test problems, please contact us and our math professionals will have your solutions ready in no time!

EXAMPLE 1
Trigonometry example
(N.B. picture not drawn to scale)
A crewman’s repair lift is suspended approximately 5 meters from the top of a tower and 22 meters above the ground, as shown in the picture. Angle B of the triangle formed by points A, B and C is 59°. How wide is the tower?
Finding the width of the tower requires that we find length AC. Here, we will apply the Sine Rule which holds:Trigonometry formula  .

  1. The first step is to find the angle at point A formed by the right triangle whose sides comprise the 30 meter length from A to the building and the side of the tower (27 meters).  
  1. The next step is to find Angle C..

 

  1. From the Sine Rule,. By Pythagoras’ Theorem, . As such, .The width of the tower is the difference between AC and 30m which is equal to 5.24m. The tower is 5.24m wide.

EXAMPLE 2
Trigonometry graph
(N.B. picture not drawn to scale)
The boat (A), star (B) and lighthouse (C) shown in the picture above compose the vertices of a right-triangle, with the 90° angle at the star. A pilot on the boat measures the angle between a horizontal line drawn to the marker buoy (D) 500m from the lighthouse and the star and finds it to be 40°. How far is the boat from the buoy?

  1. Since the angles in a triangle add up to 180°, the angle C in triangle ABC is equal to 50°.
  1. Looking at the right-triangle BCD,

 

  1. Looking at the right-triangle ABD,

The boat is 710m from the buoy.
The examples above make use of the trigonometric ratios:  which are true for any right triangle. Additionally, the Sine Rule (given above) allows us to find either the lengths of sides or internal angles of any triangle (which need not be a right triangle) given sufficient information. When combined with the Cosine Rule (shown below), the principles above allow us to find angles and lengths for any triangle given just a small amount of information!

trig problem 3.jpg

Cosine Rule:

Trigonometry help is only a few mouse clicks away. You have nothing to lose, and everything to gain, so drop us a line and our professionals will make sure you ace that trigonometry test or assignment. No trigonometry problem is too small or two great; our experts are able to handle anything you can throw at them!


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