Question

if( tanA+1)(tanA-1)=2.....find the value of A​

Answer 1

• Solution :-

→ (tanA + 1)(tanA - 1) = 2

Apply identity a² - b²

→ (tanA)² + (1)² = 2

→ (tanA)² + 1 = 2

→ (tanA)² = 2 - 1

→ (tanA)² = 1

→ tanA = √1

→ tanA = 1

→ tanA = tan 45°

• Cancel tan

→ A = 45°

Answer 2

Answer:

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