Question

Prove that sec²Θ-tan²Θ=1

Answer 1

sec²θ - tan²θ = 1

Using identity 1 + tan²θ = sec²θ

(1 + tan²θ) - tan²θ = 1

1 + tan²θ - tan²θ = 1

1 = 1 

Hence Proved

Answer 2

Answer:-

sec²θ - tan²θ = 1

Using identity,we get:-

1 + tan²θ = sec²θ

(1 + tan²θ) - tan²θ = 1

1 + tan²θ - tan²θ = 1

1 = 1

Therefore, proved!!!!!