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What is use of theta

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What is use of theta
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Meghna Thapar 4 years, 3 months ago

Theta (θ ) is a symbol used to denote the unknown measure of an angle. It is used mostly in displaying the trigonometric ratios of sine, cosine, and tangent. Theta (uppercase Θ / lowercase θ), is a letter in the Greek alphabet. It represents the "th" sound (like in "think") in Ancient and Modern Greek. In the system of Greek numerals, it has a value of 9. The Cyrillic letter Ѳ came from Theta. In mathematics, theta is used to represent an angle.

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