theta
/ˈθeɪtə/
noun
- The eighth letter of the Greek alphabet (Θ, θ).
- She wrote a small theta on the board to mark the unknown angle.
- The Greek letter theta is often used in mathematics to represent an angle.
- In the word 'theater,' the first sound is represented by the letter theta in Greek.
- A symbol used in mathematics and science to represent an angle, temperature, or phase.
- In trigonometry, theta is commonly used to denote an unknown angle.
- Set theta equal to 45 degrees to solve the triangle.
- The physicist used theta to represent the phase shift in the wave equation.