Question

prove that tan^2 theta + cot^2 theta= sec^2 theta cosec^2 theta - 2

Answer 1

Step-by-step explanation:

first make the tan and cot terms in sin and cos terms then take lcm

after that the step is important and see in image how I write sin ^4x+cos ^4x as

1-2sin^2xcos^2x

then divide differently and we get the proof

thank you