They work on pretty much any browser and some of them are also available as mobile apps for iOS and Android. Check them out and share them with us on our social media platforms if you have any other suggestions to add to the list.

#### 1. Trigonometry calculator, at Symbolab

Symbolab offers this useful trigonometry calculator to help you “calculate trigonometric equations, prove identities, and evaluate functions step by step.” Use the left sidebar to choose the type of calculation you want to perform.

Recently, Symbolab also added a new feature called Geometry Solver which you can access from the top bar. As a free user, you have access to very limited features. To unlock the full functionality of the site, you need to sign up for a premium plan which costs $9.99/month (billed monthly) or $39.99 billed annually. To learn more about this tool, see Symbolab Review for Teachers.

#### 2. Trigonometry Calculator, at Mathway

Mathway has this handy trigonometry calculator that is simple and easy to use. Here’s how the Mathway calculator works: select a topic, enter your problem or upload an image, click submit. Mathway offers detailed step-by-step solutions. If you are unfamiliar with Mathway, I recommend that you read the Mathway Review for Teachers. Mathway Calculator is also available on Google Play and App Store as a free download.

#### 3. Trigger Calculator, by Microsoft

Microsoft Math Solver offers help on various math topics covering pre-algebra, algebra, calculus, and trigonometry. The operation is simple: start by typing your mathematical problem (use the mathematical keyboard provided by the tool). You can also take a picture of your math problem and let Math Solver do the rest.

When you click Solve, Math Solver “provides instant solutions and goes even further, with step-by-step guidance using various problem-solving methods. To view the steps, select the problem-solving method and click “Show the steps of the solution.

#### 4. Right Triangle Calculator

Right Triangle Calculator is an online tool and mobile app to use for help with your own math problems. The trigonometric calculator is simple and easy to use. It offers step-by-step solutions to various problems in trigonometry and geometry. It also uses real math notations including radicals, exponents, fractions, pi and many more.

The tool also supports several calculators such as oblique triangles, circles, sectors, trigonometric identities, coterminal angles, complementary angles, trigonometric functions, etc.

#### 5. Trigonometry Calculator Android App

It is right triangle trigonometry. calculator which can be used to perform quick value calculations. The calculator is able to calculate “the value of sides, angles, and area of a right triangle from known valid values…Angles can be calculated in degrees or radians.”

#### 6. Trigonometry calculator, to quick tables

Quick tables offers this convenient, simple and easy to use online trigonometry calculator. There is right triangle calculator, trigonometric function calculator and trigonometric expression calculator. All of these calculators are provided free of charge. No login or registration is required.

Rapid Tables also provides access to a wide range of math calculators including Percent Calculator, Log Calculator, Pythagorean Theorem Calculator, Ratio Calculator, Square Root Calculator, Sine Calculator, Calculator tangent and many more.

#### 7. Trigonometry Calculator, at Calculator-online.net

Online calculator offers this powerful trigonometry calculator that “allows you to calculate trigonometric angle functions (sin, cos, tan, sec, csc, tan) in degrees or radians. Not only that, but sohcahtoa calculator with steps will apply these particular mnemonics to determine the trigonometric angle ratios accurately, thus also representing the graph.”

#### 8. Trigonometry Calculator, to Giga Calculator

Giga Calculator offers this useful trigonometry calculator to help you calculate trigonometry functions in degrees or radians. Here’s how it works: first select a function from the drop-down menu (e.g. sin(x), cos(x), tan(x).csc(x), cot(x), etc.), then type an angle in degrees or radians or enter a number, select whether you are entering degrees or radians, then click Calculate.

#### 9. Trigonometry Calculator, at Omni Calculator

Omni Calculator offers this free trigonometry calculator to help you with your trigonometry needs. You can use the first part of the calculator to “find the values of sine, cosine, tangent and their reciprocal functions”. You can also use the calculator to find the missing side or angle in a right triangle.