Question

If sinA = 4/5 , find the value of cosec²A- cot²A​

Answer 1

Answer:

= 1

Step-by-step explanation:

=cosec²A- cot²A​

=$\frac{1}{sin^{2}A }$ -$\frac{cos^{2}A }{sin^{2} A}$

=$\frac{1-cos^{2}A }{sin^{2} A}$                   if sinA =4/5    cosA =3/5

= 1 - 9/25

     16/25

=  1