Question

help... solve with process

Answer 1

Hi ,

Here I used A instead of theta.

2sec²A - sec⁴ A - 2cosec²A + cosec⁴A

=2(1+tan² A)-(1+tan²A)²-2(1+cot²A)+(1+cot²A)²

=2+2tan²A-1-tan⁴A-2tan²A-2-2cot²A+1+

cot⁴ A+2cot²A

after simplification ,

= cot⁴ A - tan⁴A

option ( 4 ) is correct

I hope this helps you.

: )

Answer 2

(1) (sec 2 0 - consec 2 0) 2