Half angle formulae || Area OF Δ and circumradius

Half angle formulae| Area of triangle inradius| Circumradius and exradii

Half angle formula||Centres OF triangle

Questions OF half angle formula || Centres OF Triangle ( Incentre , Circumcentre ) & Illustration

If the angles of a triangle are in the ratio 1:2:3 and its circumradius is 10 cm, find the sides of the triangle (in cm):

Formulas for Circumradius

Half angle formula and illustration || Continued product OF Cosine series and examples

In an equilateral triangle,the in-radius and circumradius are in the ratio

Formula for the area of a circle

Half Angle Formulae|Triple Angle Formulae|Questions