Question

The value of tan²A-1/cot²A is

Answer 1

Step-by-step explanation:

${tan}^{2} A - \frac{1}{ {cot}^{2} A} \\ \\ = {tan}^{2} A - {tan}^{2} A \\ ( \because \: \frac{1}{cot \theta } = tan \theta )\\ \\ = 0$