Question

Any one tell thus answer​

Answer 1

Answer:

2A

Step-by-step explanation:

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Answer 2

Answer:

A = π/4 or A = π/6

Step-by-step explanation:

Given: (tan A - 1) (cosec 3A - 1) = 0

On equating both factors equal to zero we get,

⇒ tanA - 1 = 0 or cosec3A - 1 = 0

⇒ tanA = 1 or cosec3A = 1

⇒ tanA = tan(π/4) or cosec3A = cosec(π/2)

⇒ A = π/4 or 3A = π/2

⇒ A = π/4 or A = π/6

So, A can be π/4 and π/6.

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