# Trigonometric Time Attack — Master TrigonometricFunctions.

> Master TrigonometricFunctions. (iPhone/iPad app by takamitsu furuya.)

- Source: https://appshunter.io/ios/app/trigonometric-time-attack/id1599281348 (this page in markdown: same URL + `.md`)
- Developer: [takamitsu furuya](https://appshunter.io/developer/1599281350)
- Category: Education, Games, Casual, Word
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 25 MB
- Languages: English, Japanese, Chinese, Spanish, Chinese
- Released: 2021-12-12
- Data updated: 2026-05-14
- User reviews in markdown: https://appshunter.io/ios/app/trigonometric-time-attack/id1599281348/reviews.md

## What is Trigonometric Time Attack?

From those who want to practice trigonometric functions to teachers who want to introduce them in class and have their students compete.
Train with the angles you use most often.
Trigonometric functions are displayed. Press the corresponding button.
You will be presented with random questions covering the most frequently used angles.
You can choose from two types: 0° to 180° and 0° to 360°.
You can choose between the degree method and the arc degree method.

The achievement status is recorded.
It will be recorded according to the number of mistakes and the time taken.
The last trophy does not allow even a single mistake. It is very difficult!


## Version history (last 5 releases)

### 1.4 — 2023-08-30

The function to record the achievement status has been added.

### 1.3.3 — 2023-06-13

Minor fixes

### 1.3.2 — 2023-06-05

Fixed an issue where the app would not launch.

### 1.3.1 — 2023-06-03

1.3.1 Minor updates

### 1.3 — 2022-12-26

The correct answer sound now changes according to the number of correct answers.

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## More apps by takamitsu furuya

- [座標タイムアタック](https://appshunter.io/ios/app/id1626950486)

All apps by takamitsu furuya: https://appshunter.io/developer/1599281350

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-14.*