To write as a fraction with a common denominator, multiply by .

To write as a fraction with a common denominator, multiply by .

Write each expression with a common denominator of , by multiplying each by an appropriate factor of .

Combine.

Combine.

Reorder the factors of .

Combine the numerators over the common denominator.

Graph each side of the equation. The solution is the x-value of the point of intersection.

, for any integer

Solve Graphically (1+tan(x))/(1-tan(x))+(1+cot(x))/(1-cot(x))=0