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Greek words "trigonon," which means triangle, and "metron," which means measure, are the origin of the term "trigonometry." Studying how a triangle's length and angles relate to one another is beneficial. So, before we delve deeper into the precise definition of trigonometry and its formulas. Let's first review and understand some fundamental triangle ideas.In geometry, a triangle is a closed two-dimensional shape with three sides and three corners. Here are some essential details of a triangle:There are three angles, three vertices, and three sides to it.The total of the three inner angles is always 180 degrees.A triangle's perimeter is equal to the product of its three sides.A right-angled triangle has a right angle that is 90 degrees. Consequently, it is referred to as a right-angled triangle. The other two angles add up to 90 degrees. The perpendicular and the base are additional sides that make up a right angle. The longest side, or hypotenuse, is the third one.The relationship between a triangle's three sides is explained by the Pythagoras theorem. The square of the hypotenuse is equal to the sum of the squares of the perpendicular and the base, according to this theorem.
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