Do you need to learn how to determine the angles and lengths of a Right Angle Triangle? Need to clearly understand which of the sine, cosine and tangent ratios to use? Need to know how to determine the angle when you know two of the sides. If the answer is Yes to any of these questions then this App is for you. The Angles Calculator not only calculates the answers for you but it also tells you how it did it so you can understand how and when to apply the rules for right angle triangles.

New this version: Now the area of the triangle is calculated for you. An explanation of how this was done is also given.

The App is simple to use. Just enter an angle and a side or two sides and all the others will be calculated for you. To see how the answers were arrived at just select the 'Workings' button and a page is shown with a comprehensive set of steps to show how each was calculated.

To enter a value for an angle or a side just touch the diagram on or near the one you want to specify. The keypad pops up. Enter the value you want and select OK. Select the other value and do the same. When you press OK this time the App calculates the other values.

To start over select 'Clear All'. All values are reset. You can now specify two other values.

Note: The App cannot calculate the answers if you specify two angles and no sides. It is mathematically impossible. You have to specify an angle and a side or two sides.

What’s New

Version 1.9.1

Updated UI and in app purchases

Ratings and Reviews

4.8 out of 5
10 Ratings

10 Ratings

eGosha ,

Made my life easier

Great app,
Solid interface.
Well done!

Lalo el malo ,

Not bad

For .99 cents this app is not bad at all, makes it a whole lot easier to get angles without figuring it out yourself.

Rc2732 ,

Awesome App. I use it for work all the time

Works well

App Privacy

The developer, Essence Computing, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like