What is a Trigonometric Equation? And its types ?

Lesson#1
What is a Trigonometric Equation? And its types ?
Solutions of Trigonometric Equations
What is a Trigonometric Equation?
Trigonometric Equation:
An equation containing atleast one trigonometric function is called a trigonometric equation.
Examples:
1) sin⁡=0
2) sin +cos=0
4) sin⁡+sin⁡3+sin⁡5+sin⁡7=0
2) Conditional Equation or Equation:
A trigonometric equation which is true for specific real values of variable within the domain of involved trigonometric functions is called a conditional equation or simply an equation.
Solutions of Trigonometric Equations
Chapter No 14
Exercise No 14
Mathematics
part 1