Question

cosec45° =? Choose the correct alternative answer for the question.
A)1/√2
(B)√2
(C)√3/2
(D)2/√3

Answer 1

b is the correct option according to question

Answer 2

Answer:

(B)

Step-by-step explanation:

$cosec 45^o = ?$

We have to find the value of $cosec 45^o$

so,

$cosec 45^o = \dfrac {1}{sin45^o}$

value of ${sin45^o} = \dfrac 1{\sqrt 2}$

Now, put the value of ${sin45^o}$

$cosec 45^o = \dfrac {1}{sin45^o}= \dfrac {1}{(\dfrac 1{\sqrt 2})}$

$cosec 45^o = \sqrt 2$

Therefore, option (B) is the correct answer.

The value of $cosec 45^o = \sqrt 2$