If cos A = 2 sin A, then cosec A is equal to :

Given :-

cosA = 2 sinA

⇒ cotA = \(\frac{2 }{1}\)         [ cotA = \(\frac{B}{P}\) ]

P² + B² = H²

1² + 2² = H²

H = √5

Now,

cosec A = \(\frac{H}{P}\)

= \(\frac{√5}{1}\)

= √5