Question

prove that 1 + cos square A / sin square A is equal to 2 cos x square - 1

Answer 1

Answer:

Step-by-step explanation:

1+cos^2/sin^2=2cosec^2-1

Putting value of cos^2

So,1+1-sin^2/sin^2

2-sin^2/sin^2

By writing it separately,we get

2/sin^2-sin^2/sin^2

2cosec^2-1