Question

Prove that: (tan square + sec square)/
sec square= 2sec square + cosec square

Answer 1

(a²-b²)²+(a²+b²)²

=>Expanding both of them we get,

(a⁴+b⁴-2a²b²) + (a⁴+b⁴+2a²b²)

Hence, on opening the brackets...

It gives, 2(a⁴+b⁴)