# Trigonometry-1 Notes and Quiz

> Simplified Pure Math notes and an Interactive Math Quiz

Canonical page: [https://chrome-stats.com/d/com.puremath.trigonometry1](https://chrome-stats.com/d/com.puremath.trigonometry1)

## Overview

- **ID:** `com.puremath.trigonometry1`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Multimedia E-Learning Education System (MELES)
- **Category:** EDUCATION
- **Downloads:** 58,762
- **Rating:** 4.15 / 5 (130 ratings)
- **Version:** 5.3
- **Last updated:** 2025-10-10
- **First published:** 2019-02-28
- **Publisher country:** BW
- **Size:** 11 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.puremath.trigonometry1)
- **Website:** [https://melesmath.com](https://melesmath.com/)
- **Privacy policy:** [https://melesmath.com/apps-privacy-policy](https://melesmath.com/apps-privacy-policy)

## Description

Trigonometry-1 Notes and Quiz delivers concise, easy-to-follow Pure Math notes on trigonometry paired with an interactive, guided quiz to reinforce learning. The app supports both Dark and Light modes and includes over 30 worked examples per chapter with step-by-step solutions and extra side notes to deepen understanding.

Topics covered include trigonometric ratios, graphs of sinθ/cosθ/tanθ, ratios for 30°, 45° and 60°, secant/cosecant/cotangent, trigonometric equations, Pythagoras, compound and double-angle formulae, the t‑formula, acosθ + bsinθ form, factor formulae, sine & cosine rules, and triangle area. Each chapter finishes with past-paper examination questions for targeted exam practice and improvement.

## Rankings

- #279,876 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.WAKE_LOCK`
- `android.vending.BILLING`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `com.puremath.trigonometry1.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Users praise the app for its comprehensive, clear, and effective trigonometry lessons that greatly aid learning and exam preparation. Many find it superior to traditional textbooks and appreciate how it makes math less intimidating. However, several users express frustration with the coin-based access system, which they find limiting and tiring. Some feel the app pushes monetization too much. Additionally, there is a desire for expanded content covering other math topics like mechanics and conic sections.

### Pros

- Comprehensive coverage of trigonometry topics with thorough explanations and many examples
- Effective and clear teaching tool that helps students understand mathematics and prepare for exams
- Makes learning mathematics less intimidating and more engaging
- High quality educational content comparable to or better than traditional textbooks

### Cons

- The app uses a coin system that can be frustrating, with users tired of having to collect or pay coins for access
- Some users perceive the app as trying to monetize excessively or not being worth the cost
- Requests for additional related content, such as mechanics or conic sections, indicating desire for broader material

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.puremath.trigonometry1)