Question

Here is the other one.................

Answer 1

Answer:

• 2+2sec2∅tan²∅-sec⁴∅-tan⁴∅
• 2+2sec2∅tan²∅-sec⁴∅-tan⁴∅)
• 2-(sec⁴∅-2sec∅tan∅+tan⁴∅)
• 2-(sec²∅-tan²∅)²
• 2-(1)²
• 1 is a required answer.

[Note sec²x-tan²x=1]