Trigonometry. Unit circle.

Anton Stukov

Contains adsIn-app purchases

About this app

Trigonometry. Unit circle.
Recommended for pupils and students.

Visual understanding and calculating sine, cosine, tangent, cotangent, secant and cosecant function, degrees and radians.
Description of functions.
Table of values.

Trigonometric formulas and identities:
symmetry, shifts, periodicity,
basic identities,
sum and difference of the angles,
double angle,
triple angle
half-angle,
sum and difference functions
multiplication of functions,
lowering the degree formula,
derivatives and integrals.

Move point to define angle and functions.
Tap circle center to determine the exact angle you want.
Use options to show what you want.

Find mistake or did not find what you were looking. - please send us e-mail.

Ratings and reviews

Has a bit of a learning curve to it, but play around with it and you can suss most of it out. Sometimes Ill mix up if im looking at a deg, a rad, a ratio of the radius or the actual number im looking for, but thats mostly my brain trying to pivot the info. If you're familiar with trigonometric relationships, its pretty hard to get completely lost. Just stop have a think and itll all click back into place. However, 2 stars for that damn spider coming down the screen ad! Nopeity nope nope!!!

Really great app. I don't have a great memory for remembering angles, but this app helps a ton. My only recommendation is that the back button be made to move to the previous screen. Specifically, when I click on a function value and it takes me to the projector, when I click the back button it would be nice if it returned me to the function value screen instead of leaving the app.

App is very good, makes trig jump out at you. However, the standard mathematical abbreviations for the tangent and cotangent functions are tan and cot (not tg and ctg). Also, note that csc is an acceptable abbreviation for cosec. Also, when you select integer degrees, the animated sweep stops. Still, it's a very nice app that dynamically shows the trig function relationships. How do I stop the ads?