Semi Perimeter is s and Area is A
Trigonometric Functions
Trigonometric functions, their periodicity, and graphs, addition and subtraction formulae.
Formulae involving multiple and sub multiple angles
The general solution of trigonometric equations.
Inverse Trigonometric Functions
Relations between sides and angles of a triangle, sine rule, cosine rule.
Half-angle formula and the area of a triangle.
Inverse trigonometric functions (principal value only).