Find the value of (sec A + tan A – 1)(sec A – tan A – 1). – InterviewSolution

1.

Find the value of (sec A + tan A – 1)(sec A – tan A – 1).

Answer» ONG>Step-by-step explanation:

(SECA+(TANA+1)) (secA-(tanA+1))

(sec²A-(tanA+1)²)

(sec²A-(tan²A-2tanA+1))

(sec²A-tan²A+2tanA-1)

(1+2tanA-1)

2 tanA

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