Trigonometry(plane trigonometry) Trigonometry is branch of mathematics which tells about sides and angles of triangles. Triangle 📐 is classified as three categories on the basis of sides (1). Equilateral triangle 📐 :- A triangle 📐 whose three(all) sides are equal to each other. (2). Isosceles triangle 📐:- A triangle 📐 whose any two sides equal to each other. (2). Scalene triangle 📐 :- A triangle whose all sides are unequal to each other. 📝 All Angle of equilateral triangle are also equal (60°). 📝 the angle opposite to the equal sides of an isosceles triangle 📐 are equal. Triangle can also classified on the basis of their angles.(by comparing from right triangle) It is of three types. Acute triangle:- A 📐 whose all angle is less than 90° Obtuse triangle:- A 📐 whose any angle is greater than 90° Right triangle :-A 📐 whose any angle is equal to 90° 📝 Obtuse triangle can only one angle that is greater than 90°. 📝 Right triangle can only one angle equal ...
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