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 Trigonometry is a branch of mathematics that focusses on the relationship between the sides and angles of right angled triangles.Hence it helps us to find the unknown angles or missing sides of a right triangles using trigonometric formulas and identities.In trigonometry angles can be either measured in degrees or radians.

 

 

 

 

 

 

 Any number of the form p/q where p and q are integers and q not equal to 0

 Triangle  Quadrilateral  Pentagon Hexagon