Question

(1-tan A)²+(1+tan A)² = 2 sec²A prove it​

Answer 1

Step-by-step explanation:

(1 - tan A) ² + (1 + tan A) ² = 2 sec²A

LHS

1 + tan²A - 2tanA + 1 + tan²A + 2tanA

sec² A + sec² A [ from 1 + tan²A = sec²A ]

2 sec² A

RHS

2 sec²A

LHS = RHS

H. P

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