---
title: "Trig Teacher"
id: 14443
type: "product"
slug: "trig-teacher"
url: "http://localhost/product/trig-teacher/"
markdown_url: "http://localhost/product/trig-teacher.md"
published_at: "2019-11-30T01:29:34+00:00"
modified_at: "2026-03-22T13:35:25+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Learn the trigonometry functions available in Sinclair Basic. Lots of graphics, pictures, examples. Covers SIN, COS, TAN, ACS, ATN, LN, EXP. Instruction sheet includes a list of formulas to use in you Basic programs. 16K."
category:
  - name: "Education"
    slug: "education"
    taxonomy: "category"
    url: "http://localhost/category/software/education/"
post_tag:
  - name: "Friendly Computer"
    slug: "friendly-computer"
    taxonomy: "post_tag"
    url: "http://localhost/tag/friendly-computer/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
genre:
  - name: "Education"
    slug: "education"
    taxonomy: "genre"
    url: "http://localhost/type/education/"
  - name: "Software"
    slug: "software"
    taxonomy: "genre"
    url: "http://localhost/type/software/"
company:
  id: 10879
  title: "Friendly Computer"
  type: "company"
  url: "http://localhost/company/friendly-computer/"
price: 9.95
date: 1983
rarity: "Uncommon"
articles:
  - article:
      id: 20258
      title: "Shopper’s Guide: Software"
      type: "article"
      url: "http://localhost/article/shoppers-guide-software/"
  - article:
      id: 24413
      title: "Using Your Computer: Programs"
      type: "article"
      url: "http://localhost/article/using-your-computer-programs/"
companies_products:
  - id: 10879
    title: "Friendly Computer"
    type: "company"
    url: "http://localhost/company/friendly-computer/"
---

Learn the trigonometry functions available in Sinclair Basic. Lots of graphics, pictures, examples. Covers SIN, COS, TAN, ACS, ATN, LN, EXP. Instruction sheet includes a list of formulas to use in you Basic programs. 16K.