Trigonometry – Formulas, Identities, Functions and Problems

# Trigonometry – Formulas, Identities, Functions and Problems

## An Introduction

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## Values of These Trigonometric Functions In Different Domains And Ranges

Values of trigonometric functions in different domains and ranges:

Domain: All real numbers

Range: All real numbers

Function: sin

Domain: All real numbers

Range: All real numbers

Function: cos

Domain: All real numbers

Range: All real numbers

Function: tan

Domain: All real numbers

Range: All real numbers

Domain: All real numbers

Range: All real numbers

Domain: All real numbers

Range: All real numbers

## Double or Triple angle identities:

The double angle identity states that the product of the sine of two angles is equal to the sum of the sines of the two angles. The triple angle identity states that the product of the sine of three angles is equal to the sum of the sines of the three angles.

## Inverse Trigonometry Formulas with Their Domain and Range

Domain: The set of all real numbers.

Range: The set of all real numbers except for the values in the domain.

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