Substitute the value directly
Simplify the expression algebraically
Factor and cancel common terms
Rationalize the numerator or denominator
Combine fractions with a common denominator
Use trigonometric identities
Apply special limit formulas
Use L’Hôpital’s Rule for indeterminate forms
Check one-sided limits if needed
Evaluate limits at infinity by dividing by the highest power
Compare dominant terms for large values
Use squeeze theorem when appropriate
Rewrite the expression to remove indeterminate forms
Verify the result by approaching from both sides