# Using a Calculator

> This section evaluates sinθ, cosθ and tanθ on a scientific calculator, and determines an acute reference angle with sin^-1, cos^-1 and tan^-1. You already chose the ratio and named the inverse. CAPS…

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## Full notes

This is a preview of the Using a Calculator notes for Grade 12 Mathematics. Create a free Hlayiso account to read the full notes, practise every question and track your progress.

## More in Trigonometry

- [Solving Triangles with Trig](https://www.hlayiso.com/grade-12/mathematics/notes/trigonometry/solving-triangles-with-trig) — Previous section
- [Special Angles](https://www.hlayiso.com/grade-12/mathematics/notes/trigonometry/special-angles) — Next section
- [All Trigonometry sections](https://www.hlayiso.com/grade-12/mathematics/notes/trigonometry)

## Frequently asked questions

### What will I learn in "Using a Calculator"?

This section covers Using a Calculator as part of Trigonometry in Grade 12 Mathematics. You'll find clear explanations, worked examples, and key definitions aligned to the CAPS curriculum.

### Is this section aligned with the CAPS curriculum?

Yes. All notes on Hlayiso, including "Using a Calculator", are written against the official CAPS curriculum and ATP for Grade 12 Mathematics.

### What should I study after "Using a Calculator"?

Continue with the next section in Trigonometry, or test your understanding with the interactive quiz linked to this section.

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